Snake oil thread? Does anyone know the active ingredients in marvel mystery oil? It did seem to free up gummed or coked rings on a 617 run on unheated vegatable oil by soaking.
The knowledge of what exactly it worked on is unknown as the rings where not visible before treatment. Plus it cleaned out gummed up prechambers as well.
Interesting observation that used as a purge the one gentleman liked it. My one original small concern was that like good expensive current penetrationg oils it does have an acid additive like sulphuric acid. It may not but there is some strong active ingrediant in it apparently if it cleaned out the injectors when running on it for about twenty five minutes. A straight type of oil would not have changed anything in my opinion.