I have quite a bit of oil and trans fluid built up from my 87GN creating a large amount of gunk on the underside of the car. I want to get everything cleaned up underneath so I can track some possible leaks. What chemicals should I use that is safe on both the transmissions aluminum, and the block and undercarriages steel? I'd rather not use a putty knife all day or the gasoline with brush tricks.
Any leads...
Any leads...