?? about cleaning hot oil tankers.........

If your water temp is 350* you might have a problem. No it won't come off.

 

best thing would be to get a load of # 6 fuel oil hauled in it then you could get it steamed out, it would be #### n span after that

 

You'll want to clean it, to use it for sprayer water (assuming it will be used with herbicides).

Don't know if a hot water pressure washer with a rotary nozzle will be enough or not. You WILL need a rotary nozzle. Our washer puts out ~3000psi and can heat up to ~250*. Use "Oil Eater" cleaner (will have to google it since somebody keep removing my d*** links.). It is non-toxic and bio-degradable. Run it through the inductor line on the washer, or check out Tetra-Chem Industries Ltd. for commercial cleaners.

 

If it had asphalt AC or PG grade in it last you wont be cutting it with the pressure washer. If it had a cutback asphalt or a fuel oil #5 or #6 in it you could cut it with the pressure washer and some good soap as suggested above . Then a simple acid wash would clean it right up.

 

I would pass on the trailer unless it's really cheap (like free) If it was hauling asphalt IF you can get it out the left over residue will cost you a fortune to dispose of (hazardous waste) plus those hot product tanks go through so many heat cycles through their lives they inevitably start cracking and leaking. And since they are so hard to clean the repair is half assed most times. I hauled AC asphalt two summers ago and those trailers were never cleaned and some were 20 years old. I was told it would be around 5 grand to actually get a tank wash to do it but I wouldn't swear on that (trucker story)