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Q: Engine cleaning with ATF ... 1/2 or full Qt? 200

Well, I have heard of ATF or Marvel Mystery Oil in the Fuel Tank, to clean Fuel Injectors, but have never heard of using it mixed with the Engine Oil.

From my experience owning two Volvos with a B21E and a B21A, Engine Oil does get into the Inlet Manifold.

It might help to give it a good clean, but you may ruin the gasket taking it off.

Just be sure all your Vacuum Lines and EGR or PulsAir System, CAT, Oxygen Sensor are functioning. I would assume that if you have a CAT, then you also have an O2 Sensor. Bosch recommends changing them after 60,000 miles.






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