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Dan, Technician
Category: Mazda
Satisfied Customers: 24587
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Oil in the cooling system, Not a head gasket. How does the

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Oil in the cooling system
JA: Has the car been overheating? Have you noticed any leaks?
Customer: Not a head gasket. How does the transmission cool on a 2002 Mazda 626?
JA: Are you fixing your 626 yourself? What have you tried so far?
Customer: Fixing it for someone else
JA: Anything else you want the mechanic to know before I connect you?
Customer: Compression good on all cylinders. No loss of engine oil

Welcome to JustAnswer, my name is ***** ***** I'm here to help get your problem solved.

V6 or 4 cylinder?

Customer: replied 1 month ago.

Does it overheat?

Customer: replied 1 month ago.
They said it had. The hoses and radiator are filled with what looks like vanilla pudding
Customer: replied 1 month ago.
At least all cylinders had around 150 lbs compression

IF it was something such as oil cooler or intake gasket it wouldn't overheat so problem sounds like head gasket. Head gasket is a 10 hour job to replace. Here are replacement instructions, let me know if you have questions. Thanks.



Customer: replied 1 month ago.
How does the transmission cool? No cooler in the radiator

It has a external cooler, here is a picture.


Customer: replied 1 month ago.
Thanks for the picture. It has coolant and transmission fluid both going through the external cooler correct? Transmission fluid could still get in the coolant if there was a crack right? I will take the cooler off and test it. Thanks

Yes it is possible, let me know if you have more questions. Thanks.

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