View Full Version : Motorcycle Oil Info - By a Retired Chemist


g21-30
December 5th, 2008, 07:42 PM
This is an excellent article and probably should be considered for a Sticky Link

It definitely should answer all your questions about what oil can be used in your bike. It answered mine!

http://www.vfrworld.com/tex_vfr/tech/oil.htm

kkim
December 5th, 2008, 07:47 PM
lol... wish I had said what he is saying in that. :)

Alex
December 5th, 2008, 08:37 PM
I know the guy that runs vfrworld pretty well; neat guy and neat forum.

islanderman7
December 5th, 2008, 11:23 PM
Wow this is good news. I do like this point number 5. I mean... "where's your evidence?"

My dad recently bought a crate of Royal Purple 10w40 for the Accord. Since its not "energy conserving" I can throw that in my bike.:D

TrueFaith
December 6th, 2008, 08:13 AM
Shell Rotella T is once again highly recommended by someone who should know. No big surprise there.

Sailariel
December 6th, 2008, 08:41 AM
I have used Shell Rotella-T in my inboard diesel on our sailboat for 20yrs. I`ll have to check to see if they make a 10W-40. They make a 15W-40 which is what I use for the inboard and our diesel Chevy Suburban.

Alex
December 7th, 2008, 11:17 PM
So who's going to post up a "how to change your oil DIY"? nudge... nudge.... :D

(and I think this article would be a nice link off of that one, but may not need to be a standalone DIY)

kkim
December 7th, 2008, 11:57 PM
So who's going to post up a "how to change your oil DIY"? nudge... nudge.... :D

(and I think this article would be a nice link off of that one, but may not need to be a standalone DIY)

Gee?? I wonder who?? :whistle:

If no one posts one before I need to do mine (Vex!!! Change your oil, now!!! :mad:) in a hundred miles or so, I'll snap some pics the next time I change my oil, but as I remember, they have a great one in the owner's manual! :thumbup:

Sailariel
December 8th, 2008, 08:36 AM
Alex, With all those superb DIYs, we won`t need our shop manuals. I can`t do pictures, but here is all you need to change the oil: You need a 17mm socket and a torque wrench. I catch the oil in a stainless bowl (available in the Dollar Stores) You first warm up the engine with a ride around the block a couple of times. You then put the bowl under the bike and using your 17mm socket, you take off the drain plug--Owner`s Manual, pages 82 and 83. Allow to drain. After everything stops dripping, you take the 17mm socket and remove the Oil Filter---Page 83 (B). When everything is drained, You assemble the filter housing (page 84) and put everything back together. Replace the rubber O ring. Tighten the filter housing and the drain plug finger tight and then take your trusty torque wrench and tighten the housing and drain plug to 14.5 Foot Pounds. Fill the oil tank with the oil of your choice--1.8US qt. Start the engine and let it IDLE until the oil light goes off. Also check for leaks around the drain plug and filter housing.

noche_caliente
December 8th, 2008, 04:29 PM
IF y'all do take pics (and yes, I really did just say y'all ;) ) be sure to get the o-ring that's 'hidden' that no one can seem to find the first time :)

VeX
December 8th, 2008, 05:42 PM
:happy50: Could I could I?? I'd be apt to doing a write-up on it, but there's already a pretty good one elsewhere :D I did throw in the tidbit on how to remove the screen though which might be of benefit. I don't have an oil change due for about 1,200 miles though... Whoever does the oil change I could supply the pics on the screen :D

Alex
December 8th, 2008, 05:44 PM
...but there's already a pretty good one elsewhere :D

Sounds like the trick is to convince that author to see the light and spend some time over here; then cajole them to putting it up themselves... :thumbup:

kkim
December 8th, 2008, 05:49 PM
:happy50: Could I could I?? I'd be apt to doing a write-up on it, but there's already a pretty good one elsewhere :D I did throw in the tidbit on how to remove the screen though which might be of benefit. I don't have an oil change due for about 1,200 miles though... Whoever does the oil change I could supply the pics on the screen :D

damn... looks like I'll need to be really careful and not put a hundred miles on mine for a few months then. :runaway:

elsewhere doesn't count... :nono:

JaeL
May 3rd, 2009, 12:03 PM
I wimped out and bought "motorcycle oil today.....:mad:
$9.99 a quart. I wasn't sure which car oil to use and the guy at the counter wasn't any help. I went to the autopart store only because I showed up for an appointment to early and need to burn some time. What I think we really need is a list of oils that people have used without any adverse effects.

jonb08
May 3rd, 2009, 12:20 PM
I thought that it is not advised to use automotive oil but now I know it's just not advised to use energy conserving.

I put the Kawasaki 4-stroke synthetic 10w-40 in my bike and it seemed to like it. This was its second oil change (3500). The oil is actually green and no it's not antifreeze! The dealer said it's made by Motul for Kawi.

capt_bugaloo
May 3rd, 2009, 01:23 PM
I have used Castrol Motorcycle 10W-40. It's never given me an issue and is fairly affordable.

Sound Wave
May 3rd, 2009, 02:29 PM
idk. it may not be necessary, but i feel better using motorcycle oil. as of my last change, i am using motorex semi-synthetic, because that is what the shop was selling. they didn't have full synthetic in my weight afaik.

kkim
May 4th, 2009, 01:18 AM
I wimped out and bought "motorcycle oil today.....:mad:
$9.99 a quart. I wasn't sure which car oil to use and the guy at the counter wasn't any help. I went to the autopart store only because I showed up for an appointment to early and need to burn some time. What I think we really need is a list of oils that people have used without any adverse effects.

http://faq.ninja250.org/wiki/Which_oils_should_NOT_be_used%3F

y2kvfr
May 4th, 2009, 04:30 AM
I've exchanged quite a few emails with Mike 'the oil guy', back when he was an active lister on the old school vf/vfr mailing list. Really nice guy.

BTW: I've used Rotella Syn in the gallon jug in my '00 VFR for, well, since the second oil change in '01. Valves were in spec when I checked this March, and no visible issues with the cams. :) I've got another 400 miles to go with the ninjette before I have to change the oil in it...

tjkamper
May 4th, 2009, 06:23 AM
I uses moble 1 synthetic 10-40 motorcycle oil

almost40
May 4th, 2009, 09:01 AM
+1 for the mobile 1 synth motorcycle oil. Got mine at autozone for less than 10 bucks a quart.

JaeL
May 5th, 2009, 07:37 AM
+1 for the mobile 1 synth motorcycle oil. Got mine at autozone for less than 10 bucks a quart.


$9.99 is what I got it for.

CodE-E
May 7th, 2009, 12:42 PM
I hate to be a skeptic, but are there any scientific studies showing any difference in performance or protection or something in motorcycle oils? All I see on the Internet are totally subjective opinions regarding this subject.

Buffalony
May 7th, 2009, 01:14 PM
I thought that it is not advised to use automotive oil but now I know it's just not advised to use energy conserving.

I put the Kawasaki 4-stroke synthetic 10w-40 in my bike and it seemed to like it. This was its second oil change (3500). The oil is actually green and no it's not antifreeze! The dealer said it's made by Motul for Kawi.

They actually have green oil. :eek:
Gonna add that to my mod list :D

I have the mobil 1 synth to. Havent switched yet though.

NaughtyusMaximus
June 14th, 2009, 05:11 PM
Has anyone used ROTELLA T SB 0W-30 in their ninjette? I can't get 5w40 here in Vancouver, but jugs of T SB 0w30 is cheap and plentiful.

g21-30
June 14th, 2009, 05:31 PM
Has anyone used ROTELLA T SB 0W-30 in their ninjette? I can't get 5w40 here in Vancouver, but jugs of T SB 0w30 is cheap and plentiful.

I just purchased a gallon of Rotella T Synthetic 5W-40 at Walmart today, but I have yet to use any synthetic oil in my bike.

There are only 2 real differences between a 5W40 and a 0W30. One is the pour point. And one is a 30 grade oil, while the other is a 40 grade. Theoretically, the 0w30 will flow better than the 5W40 when cold which should result in lower wear while the oil is warming up. But many will say that a 0W30 is too "thin". The first number of a multi-viscosity oil's rating is a measure of its viscosity at 100F and the second a measure of its viscosity at 212F. A 0W30 behaves like an SAE 0 at 100F, but retains enough viscosity to behave like an SAE 30 grade at 212F. A 5W40 behaves like an SAE 5 at 100F, but retains enough viscosity to behave like an SAE 40 grade at 212F. But, that doesn't mean a 0W30 is "thinner". Even a 0W30 has a viscosity about 5-6 times higher at 100F than it does at 212F.

Bottom line, if 0W-30 is all you can find and you want to use synthetic, go with the 0W-30! Make sure the oil is not "Energy Conserving", i.e. has no entry in the bottom half of the circle. :thumbup:

kkim
June 14th, 2009, 05:38 PM
I dunno. The Rotella 0w-30 you're looking at is not a full synthetic, is it??? ... is that what you're looking for?

If not, I'd buy any of the other 10w-40 oils available. With the weather warming up, I don't know if I'd want a 30w oil in the bike unless the temps there don't get above 30C/86F.

NaughtyusMaximus
June 14th, 2009, 05:59 PM
After looking around, I think my choices are basically cheap dino oil, 10w40, Castrol, Motomaster (Canadian Tire house brand), and some other no name, or synthetic, Amsoil 10w40 @ $20/Quart and Rotella T SB 0W30 @ $20/Gal.

I do want to switch to synth, so I might end up just going with the more expensive Amsoil. It does get rave reviews, and for the number of times that I'll do oil changes, it really doesn't cost *that* much ;)

Edit: The temps here generally stay below 30C. Looking online, I think I might be able to get the correct Shell oil: http://www.canadiantire.ca/AST/browse/4/Auto/EngineOil/DieselOil/PRD~0287935P/Shell%2BRotella%2BT%2BSynthetic%2BDiesel%2BMotor%2BOil%252C%2B5W40.jsp . There wasn't a spot on the shelf for this at any of the stores I've been to. The listing of Shell Rotella synth oils is here: http://www.shell.ca/home/content/ca-en/shell_for_businesses/lubricants/auto/auto_engine_oil.html#4

kkim
June 14th, 2009, 06:28 PM
okay... it wasn't listed here...
http://www.shell.com/home/Framework?siteId=rotella-en&FC2=/rotella-en/html/iwgen/leftnavs/zzz_lhn1_0_0.html&FC3=/rotella-en/html/iwgen/welcome.html


how many miles on your bike?

NaughtyusMaximus
June 14th, 2009, 06:47 PM
Only ~1250miles (2000km), so I'm not exactly in a hurry, but I am trying to figure out what my options are.

kkim
June 14th, 2009, 07:18 PM
I switched to Rotella 5w-40 synthetic at 1000 miles and have had no problems from it. The shifting got smoother.

if you can't find a full synth, are there semi synth options available?

I'd suggest running at least a 40wt oil, though.

Buffalony
June 14th, 2009, 07:39 PM
I switched to Rotella 5w-40 synthetic at 1000 miles and have had no problems from it. The shifting got smoother.

:D I was gonna post that for ya. LOL :D

tinng321
June 15th, 2009, 06:26 AM
How come i can't find ROTELLA T 10w40 anywhere? All I see is 15W40 or 5W40 Syn.
Do they even make them?

DerTeufel
June 15th, 2009, 07:00 AM
No 10W40 for Rotella T.

http://www.shell.com/home/Framework?siteId=rotella-en&FC2=/rotella-en/html/iwgen/leftnavs/zzz_lhn2_0_0.html&FC3=/rotella-en/html/iwgen/products/dir_products08.html

NaughtyusMaximus
June 15th, 2009, 07:58 AM
Strangely it looks like Shell does have 10w40 synth in Canada, or at least on their Canadian website.

Edit: Synthetic Blend, not pure Synth...

tinng321
June 15th, 2009, 08:25 AM
Can I use the 15W40?

NaughtyusMaximus
June 15th, 2009, 08:28 AM
I think the 15W40 is classified as 'multigrade', which isn't pure synthetic

ScorpionNinja
June 15th, 2009, 02:35 PM
Hmmm after reading all posted here, Great INFO btw GUYS! THANKS!!!

I just have afew questions left, b4 i make my mind up on my Oil/Oilchange...

ATM i have 1,537 miles on my Ninja, and was wondering..

1) would it be Better for my Clutch/Engine overall, to Change my oil
(stock 10w40 kawi oil, last changed @ 610 miles) Now this weekend?

2) change it once i get 3,000-4,000 miles on the Ninja ?
(still with the stock 10w40 kawi oil in it)
*i mean, will the wear and tear of waiting like 2,000 miles till next oil change Really shorten the Life of my Engine/Clutch Lasting like that 100,000 mile dude?


3)Will the Rotella T 5w40 VOID my Engine Warranty? (i have 5 yrs total of warranty)

Im thinking of using the Shell Rotella T 5w40 FTR* :D

kkim
June 15th, 2009, 02:37 PM
3) no.

divingtigger
September 6th, 2009, 08:56 AM
I dunno. The Rotella 0w-30 you're looking at is not a full synthetic, is it??? ... is that what you're looking for?

If not, I'd buy any of the other 10w-40 oils available. With the weather warming up, I don't know if I'd want a 30w oil in the bike unless the temps there don't get above 30C/86F.

So I should be ok with a 10w30 oil in my bike? We have barely gone above 30 this year...some years we do get to 40c but not this year

CZroe
September 13th, 2009, 05:57 AM
What's better for fuel economy? Full synthetic lighter/thinner, say, 10w40 or heavier/thicker, like 15w50? I'm assuming the former, even if it is "less protection" as they say.

g21-30
September 13th, 2009, 10:55 AM
The articles I have seen, say full synthetic; although I went with Shell Rotella synthetic 5W-40W and didn't see any change. I guess it really means YMMV. :)

subiegy2010
September 25th, 2009, 09:27 PM
So what's the general consensus on which Rotella T weight to use; 5w40 or 15w40?

CZroe
September 25th, 2009, 11:53 PM
The articles I have seen, say full synthetic; although I went with Shell Rotella synthetic 5W-40W and didn't see any change. I guess it really means YMMV. :)

I was only talking about full synthetic though. I meant "which of those full synthetic weights is best for fuel economy?" Thanks.

g21-30
September 26th, 2009, 04:57 AM
Probably the 5W-40, since the 5W has the most lubricity (slippery!).

rockNroll
September 26th, 2009, 05:15 AM
Probably the 5W-40, since the 5W has the most lubricity (slippery!).


The 5w means it flows like cold straight 5 weight oil when it's cold, the 40 means it flows like hot straight 40 weight oil when it's hot. Sooooo... the 5w will flow easier while the bike is cold... the two will flow the same after the engine is hot.

There are specific temps, not just hot and cold like I've said but I'm on my first cup of coffee this morning still and can't recall the actual temps :p

I run Amsoil 20w50 in my bikes because we're an Amsoil dealer and I get it for less than what I'd pay for other synthetic oils at retail stores... and I sometimes get Amsoil stickers, hats and shirts! I love freebees!

FishaRneked
March 17th, 2012, 07:02 PM
I have put good ol shell Rotela T 15-40 in dozens of bikes, never had an engine lubrication problem. I suppose, i could use the 5-40 if i lived somewhere cold, but i dont.

(side note- i put SeaFoam every other tank, never a fuel problem)

FishaRneked
March 17th, 2012, 07:06 PM
IF y'all do take pics (and yes, I really did just say y'all ;) ) be sure to get the o-ring that's 'hidden' that no one can seem to find the first time :)

No kidding ! What o-ring???

CZroe
March 17th, 2012, 11:17 PM
No kidding ! What o-ring???

Not sure if serious, but there is one around the perimeter of the oil filter cover, which is the obvious one, and one around the bolt that loosens it. The one around the bolt actually holds the bolt into the cover, which makes it seem like it doesn't come out. Take off all the springs and bits then pull it and it will. The ring itself is very tight and hard to remove without damaging it, but who cares if you damage it when you should only be removing it with a replacement on hand? :)

drvr5
March 18th, 2012, 01:06 PM
http://m.sportrider.com/tech/146_0310_oil/index.html

I recall this article being quite informative. Sportrider did some actual tests and measured specs not anecdotes about various oils
Posted via Mobile Device

Buffalony
March 18th, 2012, 01:46 PM
Just got the Audis oil done. Next oil change on the sticker says 10,000mi. ;)

Buffalony
March 18th, 2012, 01:50 PM
http://m.sportrider.com/tech/146_0310_oil/index.html

I recall this article being quite informative. Sportrider did some actual tests and measured specs not anecdotes about various oils
Posted via Mobile Device

Can you read that for me and tell me which oil to buy? I trust ya.:D

The Dyno test results are interesting.
I just use Mobil1 Racing.
Is there anyone here that switched from Mobil1 to something better?

DaBlue1
March 18th, 2012, 02:13 PM
...(side note- i put SeaFoam every other tank, never a fuel problem)


Why? if the gas is fresh and you're using it up and replacing it every couple of weeks, there should not be a problem. The problem comes when the gas sits for more than 3 months or more.

Ask yourself, why add more alcohol, for "prevention" for ethanol alcohol-caused gas problems? Simply makes no sense...
One of the main ingredients of Seafoam is "IPA" Isopropyl Alcohol. Don't get me wrong, Seafoam is good stuff when used as a cleaner or stabilzer.

There is an interesting article about fuel additives that make some really good points. http://www.fuel-testers.com/is_gas_additive_safe_with_e10_list.html

FishaRneked
March 19th, 2012, 04:23 PM
I maintain a fleet of training motorcycles, and have NEVER had a problem since using the seafoam. I have worked with several other fleets maintained by people who refuse to use it. AND THEY ALWAYS HAVE FUELING PROBLEMS. I SAY AGAIN ALWAYS !!!

I am not talking about one bike, owned and operated by an individual. Im talking about dozens of bikes that are somewhat mistreated...

and its only 10% IPA just to make it miscible, much different than ethanol, ehter or methanol...

I failed to mention, I live, and operate all these bikes on top of a swamp, below sea level, through various weather and humidity never drops below 60%... algea even grows on the walls, floors, etc. (whole nother topic)

drvr5
March 19th, 2012, 10:30 PM
Can you read that for me and tell me which oil to buy? I trust ya.:D

The Dyno test results are interesting.
I just use Mobil1 Racing.
Is there anyone here that switched from Mobil1 to something better?

Amsoil or Motul- for all the reasons that also make them the most expensive. I do *not* use any mobil products- a couple of years ago they killed the zddp in their 15w50 without doing anything to inform their customers. We found this out because we junked a race motor and subsequently had the oil analyzed. I believe they have since then put the zinc back in (or maybe we just got a bad batch- dunno), but that's enough to make me not run their products in anything I own or take care of.

Buffalony
March 31st, 2012, 12:42 PM
Amsoil or Motul- for all the reasons that also make them the most expensive. I do *not* use any mobil products- a couple of years ago they killed the zddp in their 15w50 without doing anything to inform their customers. We found this out because we junked a race motor and subsequently had the oil analyzed. I believe they have since then put the zinc back in (or maybe we just got a bad batch- dunno), but that's enough to make me not run their products in anything I own or take care of.

I keep this in mind. Thanks

blongwe
November 1st, 2012, 05:04 AM
Just did my oil for the first time since getting my bike. Because Kenya never gets cold is a warm, temperate climate round the year, the guy I bought it from recommended I use 20w50 regular (non-synthetic) oil. I'm glad I had someone with long years of biking experience to get the right advice from :thumbup:

ricomtzjr
December 1st, 2012, 11:50 AM
Second oil change on my bike will be done today(2000 mi). I did the 600 mi oil change with valvoline mc oil @ $3/qt. So for my second change I decided on a 1500 mi interval. This time I will be using Rotella T6 (5W40 syn). We'll see how that performs for the next 3000 miles. I am planning on subsequent 3500 mile oil changes or annual.

2012NewRider
December 4th, 2012, 10:04 PM
What is the consensus on oil change intervals, I have done the following g so far : 200, 1000, 3000, 4500 and I'm at 6200 miles now and not really sure how often I should change it. I'm also using Royal Purple 10W40

Alex
December 4th, 2012, 10:11 PM
There's no consensus. Kawi's recommended service intervals are in a sticky thread at the top of the new-gen tech section. Many people happily follow those intervals. Many people choose to change their oil more often, at a variety of different intervals. I wouldn't recommend going longer than the recommended, even when using synth.

CraigRR
April 7th, 2014, 09:24 PM
I use Amsoil 10-40 for the 250. The engine runs strong and I have no complaints. After two track days and a couple of street rides the oil is still clean. I normally change the oil in my bikes after 3,000 miles or every 3 months.

jkv45
April 8th, 2014, 06:16 AM
Just did my oil for the first time since getting my bike. Because Kenya never gets cold is a warm, temperate climate round the year, the guy I bought it from recommended I use 20w50 regular (non-synthetic) oil. I'm glad I had someone with long years of biking experience to get the right advice from :thumbup:

This thread is a bit dated, but it still needs some correction -


That's not good advice.

Run a synthetic 10W-40 in the Ninja. Running a heavier oil is not better! Heavier oils move slower - carrying heat away slower. They also build too much oil pressure, which isn't necessary and not an advantage. For starts below 50 degrees it's really a bad idea (not a factor for you from the sound of it).

20W-50 oils are for Big Twins that can easily overheat their oil and break it down. When a conventional oil breaks down it drops to its low rating (20). That's why the HD guys like 20W-50. Synthetic oils are much more difficult to breakdown, and don't drop to their low rating the same as conventional oils do.

For a water cooled engine, running a heavier oil like 20W-50 it's not necessary - or a good idea.

jkv45
April 8th, 2014, 06:30 AM
The original article posted here isn't current or correct in a few assumptions. It was last updated in 2002.

It states -

"It is a fact than many SL oils now contain lower levels of ZDDP (the zinc/phosphorous extreme pressure additive) and that is a big concern to a lot of motorcyclists. ZDDP is a last resort protection against metal-to-metal contact. Whereas a few years ago the zinc level was typically 0.12% to 0.15% in SG automobile oils, some SL oils now have as little as 0.05%. However, this in itself may not be a problem since normal operation of a motorcycle on the street would never result in metal-to-metal contact any more than it would in your automobile. Remember these SL oils meet the most demanding protection requirements of modern, high-reving, powerful 4-stroke automobile engines (among others). And there is no reason to believe the lubrication requirements of street motorcycles is measurably different."



That last sentence is completely incorrect - there are plenty of reasons to believe the lubrication requirements are different. Current auto and cycle engine DO NOT have the same requirements for oil. Current auto engines use roller valvegear - cycles do not. That makes a huge difference in the requirements for oil. Non-roller components, as used in cycle engines, need the additional ZDDP to protect the cams/rockers before there is adequate oil flow - mainly during starts. Auto engines with roller components do not have the same requirements. and can get away with much lower levels. The higher performance the cycle engine is (more valve spring pressure), the more important ZDDP is.

For a cycle engine, a "motorcycle-specific" oil is best, but current diesel oils like Rotella or Delvac have high levels of ZDDP (unlike current standard auto oils) are are a good lower-cost alternative to motorcycle-specific oils.

InvisiBill
April 8th, 2014, 12:03 PM
Another big difference - many bikes use the engine oil to lube the transmission too. It's been shown that the shared sump tends to break down the oil more quickly. In the testing described at http://www.ducatimeccanica.com/oil.html, 3600 miles in an Accord got the oil down to 91.8% of its original viscosity. After only 800 miles in a bike, it was down to 72.2%. The bike put 3x as much wear on the oil in less than a quarter of the time.

For a cycle engine, a "motorcycle-specific" oil is best, but current diesel oils like Rotella or Delvac have high levels of ZDDP (unlike current standard auto oils) are are a good lower-cost alternative to motorcycle-specific oils.

For those who aren't aware, the Rotella (T dino and T6 synthetic) is JASO MA (http://en.wikipedia.org/wiki/Motor_oil#JASO) certified. It's actually tested for 4-cycle, wet-clutch usage.
These standards, especially JASO-MA (for motorcycles) and JASO-FC, are designed to address oil-requirement issues not addressed by the API service categories. One element of the JASO-MA standard is a friction test designed to determine suitability for wet clutch usage. An oil that meets JASO-MA is considered appropriate for wet clutch operations. Oils marketed as motorcycle-specific will carry the JASO-MA label.

The 250 and 500 manuals specifically call for JASO MA if you're using oil that's certified API SH or newer. If you're using oil that's SL without JASO MA, it technically doesn't meet Kawasaki's listed requirements.

Skullz
April 8th, 2014, 04:51 PM
I like rotella's T6 oil, and tough to beat on price when you can get a gallon for 20 bux at the local meijer store.

Bob KellyIII
July 27th, 2021, 06:20 AM
Yes I know it's a very OLD thread but the subject of oil is very dear to me.
years ago on the Ranch we used 30w pennzoil in everything,because Dad did.
even in the old ford that had so many miles on it the rods were knocking and we parked it.
changing the oil was routine when it was black it was time to change it.
However times have changed and those archaic ways just don't make it any more.
Oil is the life-blood of your engine that being said it is very VERY important
for the longevity of your motor !
Newer bikes take 10W40 which is a multi-viscosity oil the thickeners in the oil change the oil's viscosity when the temperature changes... cold to hot or 10w oil when it's cold and 40w oil when it's hot....
sounds good right ? well it's not ! because those Thickeners are the first things to break down in your oil and yes about 5000 miles is maximum for a multi viscosity oil any time beyond that and your multi-viscosity oil becomes the lowest number in the can...
I talked to a learned man that worked for a big oil company one time and we discussed oil and the NEW Multi-viscosity oils at the time
he said stay away from the multi-viscosity oil in older vehicles ones with alot of miles switch rather to a single grade heavier viscosity oil.
I followed his advice in my cars and bikes and my motors began to last incredibly Longer periods of time. years passed and I got a Toyota tercell that was brand new off the show room floor it took 10w 40 oil so I used 10w40 but changed the oil at 5000 miles religiously when we topped 100K miles I switched to Valvoline 20w50 racing oil again replacing the oil every 5000 miles without fail at 300k miles the engine was getting tired but still ran for another 100k before the rods started knocking.
....
as parts ware the gap between the moving part and the bearings gets larger
it needs a thicker oil to fill that gap I have a toyota Cilica in the yard that has over 400k miles on it and it purrs like a kitten it has valvoline 20w50 racing oil in it .
My Current car is a Honda CRV with over 100k miles on it the owners manual calls for 5w30 ...as soon as I got it I changed the oil to valvoline 10w40
and we have put about 50k miles on it in the spring I will switch to valvoline 20W50 racing oil and I expect to get over 500k miles from this car.
....
My Little 2012 Ninja250R will get valvoline 10w40 for the first 5k I put on it
( it already has 5k on it) at 10k I plan to put 20w50 racing oil in it
I've stepped up the timing on this bike because the engine is working so hard
it is a powerful little motor that needs better lubrication...
my only fear is doing it too soon and putting in too thick of oil for tight tolerances.... but considering most of the miles have been at 8k RPM or more I think I am safe.... that thing works hard !
....
I've not seen too many motorcycles in my life with odometers that are over 200k miles.... oil viscosity may well be why !
Bob......