Marvel Mystery Oil MM13R-6PK - 32 Fl Oz. (Pack of 6)
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Engine & Oil Fluid Additives
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About Marvel Mystery Oil MM13R-6PK - 32 Fl Oz. (Pack of 6)
Overall Feedback:
73% positive
73% liked its compatibility with engines
I have been using MMO for a while and it's great at keeping carbon buildup down on my boat and car engines.
I used this product in my car with new motor oil and a cheap filter for 2 weeks and then changed the oil & filter back to the really good Motorcraft FL-820S and synthetic oil. It worked well in my car which is smooth-running as one could hope for at about 114,000 miles and 8 years old.
I recommend using this product in a daily driver for a longer lasting engine and smoother response.
I suggest using this product as a top lube to help engines last longer.
