My OM602.911 intake manifold is full of gunk and I was hoping to clean it in my parts washer. I am using a water-based degreaser kind of like simple green mixed with water in a 20/1 ratio. I am not confident that this will be very effective. Should I fill the parts washer with a solvent like mineral spirits mixed with a small amount of transmission fluid? TIA for any suggestions

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327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron")
139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen")

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Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.
- Albert Einstein

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