I have ya a tip for removing all that caked on greese a dirt. Iam doing the samething. I had a lot of dried on, caked on greese and dirt I use purple de-greaser 2500 psi pressure washer. What worked best was Paint stripper. I use the Kleenstrip in the Gold can from Home Depot. Brushed that all over let it sit about an hour the Pressured washed againg it all came right off. Hope this helps


"Finish the thing, do it right the first time, and drive the S.O.B.!"

1949 Chevy half ton 3100 In a kazillion pieces
2000 GMC Serria 1500 SL 4x4