Quote:
Originally Posted by underscore
There's always a chance of a bad tank too, I've had a couple from Chevron over the years and my car isn't modern enough to be very forgiving about that.
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Thats what I’m assuming. So comparing my last tank to what I put in last night, I have lost almost 10° of timing at the top end and had a tonne of knock. Back to back logs but with wmi on I went back to aggressive timing and no knock.
Damn chevron