Quote:
Originally Posted by arpad_m
The service department will sure be able to see the orange MMT deposits on the spark plugs if you regularly use these octane boosters. As a result, they technically do have grounds to refuse a warranty repair, because you used an off-road only additive that is explicitly prohibited by GM, whether or not it actually causes damage.
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Thank you arpad_m , I've read that , and why I haven't used any additive as of yet.
I am curious on what NicKey s thoughts ?
Short of no 93 here , nothing can be added to raise the octane , other than I can buy race gas and add to 91 to achieve 93 .
Is race gas considered an off road product?
It's not that I'm wanting more HP , it's more about knock for me, summer heat here is 105 average ambient, and under hood ?
I just don't want to put the car under deress , hurt the motor .
Thank you all