Quote:
Originally Posted by DanG
As most of you know, BMW recommends Shell gas for our BMWs. Maybe for that reason, Shell premium is a rip off in my area. Shell premium is $.50 more expensive than regular. It is currently $3.89 per gallon in the Seattle area. ARCO premium is $3.25. ARCO is a top tier gas. ARCO charges $.30 per gallon more for premium than regular.
So I only use Shell when my grocery points gives me more than $.70 per gallon off which is rare.
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I filled up with a tank of ARCO a few months back at a sketchy station up in Everett and got a check engine light after a few days. it stayed on until I filled up again with Chevron and went away maybe a day after that fill up. Not saying it's related but it's suspicious. Had not had a CEL before or since. Have not filled up with ARCO before or since.