I just bought this 503L it ran when parked about 3 years ago it has antifreeze in the oil my question is does anyone know what motor this is I can't seem to find any numbers on it.
That doesn't look at all like the UD236 engine in my 503 Galion. I once heard that some of the L series came with a Waukesha engine.
FWD
I think FWD is right, that isn't a UD. I'll have to check my books to see what Galion offered back when. The other odd thing is the S/N tag says Galion manufacturing and not Dresser division. Oh well, learn something new!
J13301, I don't see where Galion put a Waukesha in it as a regular option. Galion was a short line manufacturer and may have put one in as a special order for a customer, or they may have ran out of UD's and put a few together with Waukesha's. I know they used them in their rollers some, so who knows? It maybe a good old repower job from someone who needed it to start when it was colder than 50deg. UD's were a bear to start in cool weather!
Razorsedge2003, check and see if it has a oil cooler in the filter base, this may very well be your leak. If not I'd say a head gasket is likely.