Sludge and CO

I have sludge problem here and looking for a way to fix it. I know
how I got the sludge... and that problem has been rectified... but now
I have get rid of what is in the crankcase. What I have is a propane
forklift... with an old continental flat head 4 cylinder. Its too
costly to pull the pan on this... so have to find something that will
help breakdown the sludge - residue in the pan.

I have tried a product call Sea-foam which is suppose to help get rid
of moisture... but I think that is only when we are talking about
preventive maintenance. I have hear people dropping in about a gallon
of diesel fuel and just let it sit there ... but not sure if that will
break it down.

Any opinions or comments...?

Thanks in advance.

Gdm