Archived HELP - Radiator is full of oil ???

[tinaanddale]

I would bet its the oil cooler ,had that problem,radator full of oil read up on this ,pulled oil filter housing out ,behind plate is the oilcooler replaced it,no more problem, 89 2500auto260k.

 

[cumminspwr01]

BTW, the two gaskets to the oil cooler are not the same 1 is a 3942915 the other is a 3942914

 

[TStinson]

Hey - This has been going on for awhile -

Has the problem been identified & corrected?

Just curious.....

 

[lschultz]

This happened to a 91 I had with auto. It was the oil cooler.

 

[Morgan.C]

It is most definitely the oil cooler. Oil pressure is greater than the coolant pressure, therefore when the cooler cracks it ends up in the cooling system.

 

[Andy Redmond]

You can remove the oil cooler and take it to a radiator shop an have it pressure tested to about 60 psi to see if it leaks. It and the gaskets from Cummins is $300-350. It is far easier to ck. and r&r than the head gasket.



You have seen the gasket part no's previously listed.



TStinson. . glad you got your problem licked.



Andy