Thread: Dark oil
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Old 08-08-2021, 12:33 PM   #6
Kube
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Default Re: Dark oil

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Quote:
Originally Posted by Clem Clement View Post
I change oil in my'39 pickup in May as it was nearly black. It ran some during the winter and i flooded it during starting a few times. I figured I got gas in the oil (no electric fuel pump). This week I noticed it was dark again. I drained the dark oil this evening. No oil filter.

Should I add STP (Only because I had some) to the fresh oil at this time?
clem
You can still get STP? That stuff caused more issues than it ever had cured. I recall clearly the engines (OHV) that I'd rebuilt through the years. The folks that used that crap on a regular basis... I could tell by looking inside the engine. Snake oil, right up there with Slick 50.
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