Maybe Oil in Coolent HELP

APEX 06

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Sheboygan, WI
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09 Nytro XTX, 08 Apex Mtx
Guys I was going to replace my Coolent (100%) to (50/50). I pulled the cap off the radiator and there was oil looking spots. Sled runs fine, oil looks fine-no milkly color. Thinking if its oil can I replace the head gasket with the motor in the sled.



Help :o|
 
Do a pressure test it may be nothing more than someone added coolant with a oily funnel.
 
it doesn't take much pressure to find a leak so if you keep it 10 psi or under you should be fine. Most coolant system caps "pop-off" at around 16-17 psi.
 


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