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2009 le awd
532 Posts
Some might put this into the same category as a trans flush, best to take what gravity will give you and leave the rest alone. I do run some sea foam for 200 miles before oil change and dump the other half into the fuel tank but who knows if there is any benefit. The only reason I did this was because of a vvt code that would pop up on a rare occasion. Dirty oil or too long of a duration between changes seemed to one possible cause. I was going for 10,000 between and have since settled on 8,000.

I had this other car with a screw on filter and I was 100 % Sure I had the face cleaned off good but the rubber seal was still on it so it had two of these now. It must have pumped 3 quarts of oil onto the floor in like 30 seconds.
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