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marvel mystery oil
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2.5L ('98-'01) Marvel Mystery Oil in poorly maintained, high mileage truck
note: 2000 ford ranger 2.5l 2wd mt, 275,000mi, i received the truck at 120,000mi .... i have gone quite a few oil changes to over 5k miles and/or over 10mo Hey, I am wondering if it is a bad idea to place Marvel Mystery Oil in my high mileage engine? i have never "de-sludged" my engine before...- youngbuckwithapickuptruck
- Thread
- high mileage marvel mystery oil mmo poor maintanace sludge
- Replies: 16
- Forum: 4-Cylinder Engines (1983-2011)