Oil still in radiator after about 5 flushing.i didn’t have any problems until oil cooler went bad

With what do you clean it?

 

Use Cummins/Fleetguard restore or Penray oil purge. Sometimes takes awhile to get it all out.

 

Just went through this exact situation. 5 flushes with dawn dish soap and she was clean as a whistle

 

It can take several times to get clean. You can have little blobs of oil pop up weeks later. Very hard to get cleaned out due to all the passages.

 

What engine?. It should get better with every flush. Usually 2 good rounds will get out most of it. If it keeps coming back you still have a leak somewhere.

 

Ajax brand dishwasher worked better for me. Bought it cause it was cheaper! Got lucky. Still took a few flushes