Marvel Mystery Oil
Any one ever add this to fuel in your diesel trucks? The only reason I ask is my 07 Duramax developed a light surging at idle. Researching the issue it is a fairly common problem especially with tr...
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I have used Marvel Mystery Oil a lot in past years on very old and very well-worn vehicles with reasonable success. However, due to the complexities of modern diesel truck engines, I would not even consider it.
