Why Is There Motor Oil In My Car’s Coolant?
Reader Question
Hi Austin
I have a Buick Century, 1998. I have noticed motor oil in the coolant. I had it flushed a year ago but after a while the oil was back in the coolant.
Someone told me to have the coolant flushed again and add Blue Devil Head Gasket Sealant to the radiator, and it would solve all my problems. Do you think that will fix the problem or is there something else you would recommend.
Regards
Chris
Hi Chris
Wellllllll, not real sure you have a “problem” not to uncommon to see a little oil residue in the coolant from time to time. I would first HIGHLY recommend you get a cooling system pressure test, which will tell you if there is an internal coolant leak inside the engine.
This is a quick and cheap test any mechanic can do for you. If you still suspect there is an internal issue then sure, it won’t hurt to try a “head gasket” type of coolant sealer.
I have never used or heard of the sealer you mentioned, but have had GREAT success with K&W Engine Block Sealer, which is available at any auto parts store.
That sealer really works well if you follow my instruction not that on the can.
Here is the link to MY instruction on how I use K&W Engine Block Sealer to repair blown headgasket issues and internal coolant leaks.
Click To – How To Use K&W Engine Block Sealer
Blessings
Austin Davis
Category: Head Gaskets
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There is certainly a great deal to find out about this subject.
I like all of the points you’ve made.