Originally Posted by BLACK94SSEi
I keep seeing people post about premuim gas prices and their SC'd cars. I have a SC'd car and I use plain'ol regular. Does it really matter with these engines? My engine code is 1
Just curious. I dont want to create more problems than I already have.
oh ok I asked this same question because I am at high altitude and we can only purchase lower octane fuels.
As clearly indicated by the usermanual you can use 87 or higher, thats midgrade here but probably regular where you live and it will work but will kill your accellerations becuase the engine will knock more than normal, meaning the timing will retard causing issues, and if the timing does not pull back far enough due to less octane you could cause damage to your motor over time.