If your wife won't let you do this, go to your mother's house and tell her you need to check her washing machine.

I unhooked the hot water line for the washing machine and ran the hose with a metal nozle outside to the car, sparayed the undercarriage and engine with Industrial Grade Greased Lightening and rinsed with hot water from the hose. It worked great. It cut the years of oil buildup like nothing I have ever seen.

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1982 300SD Light Blue
2002 Honda Accord SE
1974 Toro Wheel Horse Tractor
2000 Toyota Tundra Pickup