[SARGE]

Thought I knew all about this stuff. No one, even radiator shops can explain the problem (?). When I take the cap off the old '72 Cheyenne, with engine running it looks like thick soap suds sloshing through there. I drained and refilled and same thing. I know it's not oil for it wouldn't cause that. We're talking very thick soapy suds. Figgered since everyone around here knows so much I'd toss out the question. Never seen this in any car, nor have the shops I called. And, it is running a little hot.