Quote:
Originally Posted by jkv45
I would say use the lowest octane you can get that doesn't contain ethanol.
Or you could try the Stabil additive designed to neutralize the effects of ethanol.
87 without ethanol will give you the best performance and economy in a stock Ninja 250 if you can get it.
I believe having excessive octane can lead to incomplete combustion and additional carbon build-up in the combustion chamber. It can also lead to hard starting in some engines.
In a carbed engine, gas with ethanol will produce a leaner mixture than gas without, so running ethanol-free gas can make a carbed engine run better (richer) if it hasn't been tuned.
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There are other benefits to using a premium grade gasoline in your engine;
- Fuel detergents will protect against intake valve deposits
- Anti adhesion compounds prevent fuel detergents from forming a sticky
film on intake valves
- corrosion inhibitor helps prevent rust in the fuel system
- demulsifier helps prevent water from accumulating in your gas tank
allowing it to be separated and removed
I believe less expensive gasoline may not contain these added benefits.
Bill