Oil in radiator is this a blown head?
Thread Starter
Newbie
Joined: Nov 2016
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Model: Cherokee
Oil in radiator is this a blown head?
Have a 5.2 v8 1993 grand Cherokee Laredo and just found oil in the radiator. Is this a blown head? It's not using oil, not smoking no moisture in valve covers. Everything seems to be running fine. No water on oil dipstick. Any ideas?
Senior Member
Joined: Mar 2016
Posts: 707
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From: AV Kalifornia
Year: 1996
Model: Grand Cherokee
Engine: 4.0
I would go with trans cooler as well. that is the only thing I can think of that might have more pressure than the cooling system and therefore would permit the oil to flow out and into the radiator.
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
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From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Yes, check the trans dipstick for coolant. To be sure, you can pull the trans pan and see if there's any coolant in it. Once you shut off the engine, residual pressure in the radiator will allow coolant to flow back into the transmission.