Do you use premium gas?

[Radar Chief]

Originally Posted by Detoxing

No idea. But my car has a known timing chain issue so i'd rather not **** with it. I've heard different things. To name a few:

Use higher octane only if the motor is pinging.
Using 91 Octane on an 87 Octane car may cause premature failure of the injectors
Forced induction cars must use 91 Octane or higher.

I've heard a lot of things regarding octane. I'm not really sure what to believe so i just go with what the book says.

Never heard of that one.
But I do know that running 91 octane in an 87 octane motor is sending more unburned fuel down the exhaust and can clog your cat(s). Saw that one for myself.