440 (oil in radiator fluid?) help

[Chryco69]

Its been four (4) months since I have started my car. (1969 Dodge Coronet 440/727)

I fired it up and let it run for a little bit this morning. I happen to observe that there is oil in my radiator fluid. I checked the oil dip stick and it is normal fresh oil. (No milk type substance)

It ran at idle for 10 minutes with no issues, and sounds very healthy. It was recently rebuilt.

Could this be a bad head gasket? What do you think?

Thank you for all and any help!

 

[67gtx 0324]

if your trans lines connect to radiator it could be that
seen trans fluid in radiator before

 

[Pops1967GTX]

You have a couple of possibilities ....What kind of anti-frezze are you using? Did you mixed two different antifreeze..will cause a brown color...check trans oil, sometimes when the oil cooler in the radiator fails it'll allow cross contamination. Get access to an engine leakdown tester you could pressurize the cylinders with the radiator full of coolant & look for air bubbles in the radiator. Or cooling system pressure tester you could pressurize the radiator with the spark plugs out and listen for air escaping into the cylinder.

 

[Chryco69]

Major sigh of relief! Through further investigation, it was found that it was Bar's Radiator Stop Leak, and not motor oil.