Quote Originally Posted by s1795so2 View Post
Is 93 okay to run in a stock gtp? I always though it would be a little much for stock, or is there a reason I should step up to it from 89?
93 is the recommended fuel for 97-03 GTPs. This is why the gas tank door says "Premium Fuel Only".

And as I stated above, I recommend to run 93 octane unless your PCM is setup specifically for other fuel.