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jkv45 · May 25th, 2015, 08:04 PM

All oil, synthetic or convention, is designed to run at 212F - that's the temp they use to get the higher rating. There may be instances where an engine could exceed that, but with a water-cooled engine it wouldn't be by much in most conditions.

With oil, thicker and colder are NOT better. An oil cooler will extend warm-up time also, which is also not an advantage.

If you are concerned about maximum protection, move up to an ester-based synthetic oil (Group V) like Redline or Motul which can withstand extreme heat and pressure that even a Group III synthetic like Rotella T6 can't. But if you are getting into that range, you most likely have bigger problems.

May 25th, 2015, 08:04 PM	#30
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	All oil, synthetic or convention, is designed to run at 212F - that's the temp they use to get the higher rating. There may be instances where an engine could exceed that, but with a water-cooled engine it wouldn't be by much in most conditions. With oil, thicker and colder are NOT better. An oil cooler will extend warm-up time also, which is also not an advantage. If you are concerned about maximum protection, move up to an ester-based synthetic oil (Group V) like Redline or Motul which can withstand extreme heat and pressure that even a Group III synthetic like Rotella T6 can't. But if you are getting into that range, you most likely have bigger problems.