transmission fluid backing up in my radiator or maybe its oil 2000 astro

Asked by Nov 17, 2013 at 10:25 PM about the 2000 Chevrolet Astro LS Passenger Van Extended

Question type: Maintenance & Repair

5 Answers

19,755

oil could slip thru or under a head gasket. but not trans. fluid

5,560

The astro is famuse for head gasket problems

32,885

The oil in the head is not pressurized since it is not an overhead cam engine the only place where oil pressure will overcome and enter the cooling system without getting lots of coolant in the oil is in the radiator where the oil cooler is there is also sometimes a trans cooler on the passenger side of the radiator and since it's a van I would bet there is a trans cooler on the radiator.  it is not a head gasket unless the coolant is running into the crankcase.

5,560

check your oil and see if it is a milky color like chocolet milk

32,885

It will look more like a vanilla cookie or yellow cake rather than chocolate milk.

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