Quote:
Originally Posted by mlozzi200478
has anyone used marvel mystery oil,you can pour it right down the intake air sensor and let it sit in the valve bowls it works well at lubricating the upper cylinders and has a unique way of cleaning out carbon deposits,you can also add it to the fuel tank.do you think sea foam works better?
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I have used Marvel Mystery Oil in my cars for years without problems. I add it to the oil and fuel. Cars run fine.