My car NEVER overheated, dosent burn a drop of oil, but it does go through antifreeze. The motor is a JDM 97 b18b into a civic hatch. I put less than 15k on it since i had it, probably like 10-11k.

Now im checking my radiator and its always full. My overflow though is ALWAYS empty after about a week-2 weeks...some times it takes longer. I have no drops on my driveway so i know its not leaking either.

Today I was tucking some wires and see on the front of my block a big wet spot...like my motor pissed its pants or something. Its right around the dipstick area and looks like it comes from the HG area all the way down to the oil pan, and about 6'' wide. Its all dry and i cant tell if it is oil or antifreeze. But i know it was not there when the motor was installed. I cant see the HG line because the manifold is in the way but tomorrow i plan to pull the mani to check it out. When i did a comp check it seemed OK...i believe 180's and 190's totally cold motor.

I know there is leak dye for AC systems...is there the same crap for antifreeze so i can run it through for a while then check with a black light. Im going turbo in a few weeks and i dont think boosting on a bad HG is a good idea.

 

Take the oil cap off and look to see if it has milky residue on the backside, that will tell you the headgasket is blown as oil and af are mixing. If that does not show anything, get some PH paper and rub it on the residue. The PH balance in the oil or af will turn the PH paper a certain color. If the color is a combination of oil and af then there you go. A PH chart will give basic properties/colors etc.

 

no milky residue...changed oil as well and oil was only black...no antifreeze in it.
I dont know if its possible but can just one of the sections for AF on the HG get a rip?

Ill take pics today of the mark on the block of what im talking about.

 

Have your cylinders checked for proper compression, and a leak down check done on the cooling system; could be worn rings. This can show similar symptoms to a leaking head gasket.

 

heres what im looking at

 

Sure looks like it is leaking to me.