failed radiator cap??

[Coldcomfort]

Hey all, my 2012 CRD truck is running hot and coolant is going somewhere. Its not in the oil and the coolant is also OK. I have been all over and the only thing I can see is the over flow container (the one on the LHS of the engine bay) has coolant on top of it. Apparently the radiator cap on this container is a common failure point. I have a new one ordered. Has anyone else experienced this?

[Coldcomfort]

I'm cautiously optimistic that the new rad cap has solved my issue. Did a 120K drive this morning and everything looks to be back to normal. BTW. The temp gauge on the dash is useless. If I didn't have a ultra gauge monitoring the coolant temp I would have not known about this until it was too late.

[luisgregarrrry]

Hey mate Yeah my over flow cap was destroyed when I bought my patrol, think it broke down slowly into the water

[pollenface]

Yes. best way is to get a pressure test to know any weak spots

[Coldcomfort]

The day after I did the 120K drive I took the cap off when the engine was cold. There was still pressure there. I guess that is a pretty good test.... ?