Originally Posted By: Jason8691
Originally Posted By: wavinwayne
In my bone-stock '00 VW GTI 1.8T engine, what is the highest octane unleaded gasoline that I can safely run in the car? Is 93 my limit?
If its bone-stock, why would you need to run higher than 93?
I don't need to run anything higher than 87 octane, from previous experience with the car. I was just curious about what problems, if any, the engine might experience if higher than 93 octane were ever used, for whatever reasons.