89,91 octane?

[vicious]

i was told by a friend that my car is waisting for gas because for like the last couple of months i have been using 89 instead of 91 octane in my auto gts, is this true or is my friend just bluffing. thanks also what can i do if i want to put 91 now instead of 89 is it a good idea to mix the two fuels. thanks.

[bgreganti]

No, the car is not wasting gas. However, you may not see as much horsepower as you would with 91, but that really depends on a lot of things. If you're not driving the car hard, and it doesn't ping, don't worry about it.

Also, you can mix different octane fuels with no problem.

[oldster]

Check out your owners manual and follow their recommendations.

[ASM]

Anyone know the truth behind why CA stop carry 92 ?

~ASM

[bgreganti]

Originally posted by ASM
Anyone know the truth behind why CA stop carry 92 ?

It's no secret... the gas companies are cheap bastards trying to make more money.