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Old 04-25-2021, 10:48 AM   #32
Ruth
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Join Date: May 2016
Location: Glide, Oregon
Posts: 1,339
Default Re: Marvel Mystery Oil in Crankcase

Quote:
Originally Posted by JOHNCL View Post
MMO has the property of climbing the sidewalls of a metal container. According to a recent story about MMO in Rodders Journal, that is why it is sold in plastic containers. I have used it to help loosen rust-stuck threads and i have used it to loosen sticking valves (on the engine stand).
Well it hasn't ALWAYS been sold in plastic containers.
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