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Spray it off with your garden house and then spray tire FOAM all over. Close your hood and let it dry for awhile. Then wipe down the motor with a rag. Kaley
I have never done this until the last show....
...I used Armorall Tire Foam...and only avoided the belts directly...
(knock sensors would be difficult to get wet under the intake manifold)
I didnt use water...however, this left a considerable amount of greasy spots on the metal...
The final result was spectacular but I used every imaginable means to clean the greasy parts...