Is it safe to clean your engine at the car wash?
Can I SPRAY MY ENGINE TO CLEAN IT? on 1996 Lexus LS400
No! Wire connections and componets under the hood are water resistant not water proof. I have had to repair a lot of problems for that very reason.
2 more answers
Agree with #1. Vehicle's engine does not 'swim' well.
no direct water on upper 1/2 of eng. ok to clean frame area though.