luftpirate

Last month my car started dumping coolant into the oil. It seems to have started in a short amount of time and was consuming significant amounts of coolant. I immediately stopped driving the car. Milkshake dipstick

* So far I have done a compression test which seems to be on par. Results 160/180/165/160

* No visible signs of white smoke from tailpipe.

* Cooling system pressure test @ 100kpa yielded very small loss of pressure over 15 minutes, results the same while hot and cold. No sign of moisture at all in cylinders after test.

I thought I had this figured out and ordered everything to do the oil cooler reseal. My parts arrived and I went to drain my coolant and found this.



No signs of oil AT ALL in the coolant. So could it still be the oil cooler?

I'm starting to think I have a crack in the block somewhere from the water jacket to a low pressure oil passage. I really don't have any idea how this could have happened as to my knowledge the car has no over heated or had any issues.

Any ideas besides LS1 swap and doing the oil cooler reseal anyways? According to Clarks Garage the first sign of the oil cooler leak is oil in the coolant and not the other way around. My car was making great oil pressure too.

As always I appreciate any suggestions.

aribop

Head gasket.

Dougs951

or......Oil cooler seals, I was having the same exact problem and the oil cooler seals were shot. Specifically the O rings.

luftpirate

Were you getting oil in your coolant?

Dougs951

Nope. I think it was going into the oil too fast. My seals failed after I let the car sit for a few months.

luftpirate

Well that's good news because everything I have read so far so oil usually ends up in the coolant first before coolant ends up in the pan. Thanks

Edit : It was the oil cooler seals.

T_Glass_27

Mine was coolant in the oil but i only had a drop of oil in my coolant that i could see. it was my oil cooler seal...