Thread: Type of fuel

Ok. First, sorry if this has been asked already.

I have a non-mod 02 GP GT n/a 3800. Just wondering if running 89 (low grade) fuel would hurt the engine or should i nnot even worry about it?

Sent from my GT-S5690M

Just run 87 octane

87 is gas is takes from the factory, running anything else is 100% okay.

It doesnt matter what you want to run, a higher grade will just reduce some ping/knock retard at full throttle.

Run 100 octane. Rackar

You can run 87 without issues.

Always wondered that myself. Dirty little bastards if it is all the same. Lol

Sent from my GT-S5690M

Originally Posted by tc300

I've always wondered if the gas stations really have diff octanes like the pump says they do.... How could you tell if you get 93 octane for the 30 cents more your paying...??? Lol.

Originally Posted by KitRae

Always wondered that myself. Dirty little bastards if it is all the same. Lol

Sent from my GT-S5690M

My motor can tell the difference and so can urs. They really have different levels.

if you run 93 in a n/a engine it should get better mpg, not a whole lot but better. and feel a bit stronger.

but running 87 is safe cause your n/a.

Originally Posted by Scottydoggs

if you run 93 in a n/a engine it should get better mpg, not a whole lot but better. and feel a bit stronger.

but running 87 is safe cause your n/a.

Exactly. But run 87 in a S/C or ls4 motor without being tunes for it ...then beware

The EPA (I beleive its the EPA or some GOVT agency) comes around and randomly tests the flow of pumps for acuracy and also test the fuel quality to make sure it is the same octane it is claimed to be and also tests to make sure the detergents claimed to be in the gasoline are there. (BP-Invigorate, Marathon-STP, ect)