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ENGINE CLINIC — The After-run Oil Debate and More
Do we really have to use after-run oil? I don't really understand the problem here, but some seem to find this a major inconvenience. Read on. AFTER-RUN OIL? ✉ For almost 30 years, I have used Marvel Mystery Oil or Marvel Air Tool Oil as an after-run oil in my engines. To date, I have never had a bearing failure, even though I run my engines a moderate amount for a period of eight to...
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