Originally Posted by f1100turbo
This is false.
The computer adjusts according to "engine knock" to give the proper air fuel ratio and timing.
There "not set" to a pre determined octane ratio.
This is just silly.
Sabre owners united!
Engine knock is not the issue. Whether higher octane has any overall benefit is.
Some small cars need higher octane and say so in the owners manual, otherwise per the industry use regular gas and all is still ok and cheaper.
US Gov site on octane
CBC Marketplace test on fuel