ajax and a push broom works best

 

Get some "SOLEVENT" somehow, parts store sells it and rags , either soak the rags and scrub or vice versa , solevant is the only way to go!!!!!!!!! lots of it...from experience

 

Better yet he should use a blow torch and a scraper.

 

I also vote Dawn. That stuff is great for oil/grease and hell its even mild enough to use on oil soaked animals.

 

thanks guys, im going to try some of these things

 

Try them all at the same time, see what happens.

 

obviously no experience with solvent i take it

 

I was trained in auto collision repair. We got trained really early on that you use the weakest cleaner you can that will do the job. Solvent is overkill in this area, along with, certain solvent will even attack the bed-liner. When his mild car wash soap didn't cut the oil I suggested Dawn dish washing soap, which I know for a fact does really well against oils.

 

That there is funny, I dont care who you are......

Any way like others have said DAWN, or simple green, or a decent citrus degreaser will work, Dawn is the cheapest way though.