shadowknight

a few months ago I replaced the seals on my oil cooler. Since then I have noticed that after a week or two the coolant resivor is low and I will have to fill it up. I have not noticed any leaks on the driveway and the oil looks fine. When I top of the coolant it also looks fine as well. Any suggestions on where this coolant maybe going.

billthe3

Any white smoke when driving the car around? You could be burning off coolant if it is getting into a combustion chamber somehow.

shadowknight

no white smoke

Gremlin85

Same issue here. I have not touched my oil cooler seals. Oil is fine and coolan t is green, no oil residue and no discoloration. I have to top off every month or so (Daily driver 50 miles a day), no white smoke while driving and no leaks.

It could be burning it but in very small amounts.

schwank

Also make sure your radiator does not have any small drips or seeps. My 951 has one that leaves no trace on the ground, but there is a very small amount that slowly seeps from the radiator somewhere.

New one is on order

KuHL 951

If your reservoir cap is not holding rated pressure you can be evaporating coolant through the cap while you drive and not even know it. It doesn't take much of a flaw in the seal to make the car run a bit hotter due to the loss in pressure. I fixed a Honda once that two shops and the owner said needed a head gasket due to coolant loss and boilover; I installed a new 16psi cap and everything was fine. It's a cheap fix if that's the problem but life isn't always that simple..

75ohm

Either that or a cracked or leaking reservoir as well... nice to see another West Central Floridian on the 'list!

Mamooguy

Maybe a little crack or hole somewhere, with coolant slowly escaping as steam?

John_AZ

20 year old head gasket failure. The little puff of "condensation" , the denial of a slight "oil burn puff" that is actually antifreeze. I went through all of the same tests. 2 sets of oil cooler seals, compression test, leakdown test, spark plug thread wetness after initial startup and checking for antifreeze on top of cyl cold and hot. Eventually the puffs got bigger. I changed the headgasket. Problem solved and you get the added benefit of replacing hoses under the manifold and a good time to flush the injectors. The machine shop could find no traces of antifreeze paths by case or cyl walls. That said, you may have an antifreeze leak in your heater control valve by the pivot-not by hose clamps. The radiator plastic to metal seam could be loosing a few drops. Get a radiator presure tester and look for your antifreeze loss. Good luck.

John_AZ

1988 924S to show
1987 924S to go
1998 Cherokee to tow