Tramny Fluid in Oil

Asked by bkbarnes444 Dec 29, 2016 at 06:36 PM about the 2003 Chevrolet S-10 LS Crew Cab 4WD

Question type: Maintenance & Repair

I have a 2003 ZR5 4X4 S10.Just recently installed
new aluminum radiator, electric fans, and auxiliary
coolers for tranny and oil. All hoses are hooked up
right, trust me I'm not an idiot. I've been losing
tranny fluid and my oil is going up. Putting two an
two together I'm leaking fluid into my oil. The
mystery is how? I've tried eliminating all
possibilities. Anyone has info, besides the whole I
hooked up the wrong hoses, I'm not dumb, please
help.

4 Answers
220,915

Rowefast answered 7 years ago

Well then what is different? The new radiator, correct? Is it possible there are some leaks in the oil cooling tanks? May need to get tested?

Mark helpful
34,745

lrodri911 answered 7 years ago

The only other explanation is a hole in the cooler. Since transmission has higher pressure, it leaks in the oil cooling chamber

Mark helpful
60,335

Andrew answered 7 years ago

If the oil cooler and trans cooler on the radiator are on 2 different sides then it's not possible for them tk do this. Most coolers in radiators are just tanks that sit in coolant. Now coolant contamination is possible but there is no where naturally that transmission fluid can get into your oil. And I've never seen coolant ran to the oil filter adapter, that is however where the oil cooler lines are that flow oil to and from the oil cooler in the radiator, certainly not coolant.

Mark helpful

Your Answer:

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