Seafoam treatment, UPDATE: Cyl #4 misfire
#11
The smell can stay a while, it takes a little time to burn it all out of the exhaust. When you drain your oil, all the oil doesn't drain out so you still had some sea-foam left in the engine. If your new oil is black in 150 miles, I would change it again. New oil does not turn black that fast unless there is something in it to turn it black(like crap that the sea-foam cleaned off the inside of the block).
ROD
ROD
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