[rodneym]

It seems like the more I ask, the more (different) types of answers I get...

What kind of caps do we use on the expansion tank? Vented or non vented?

My setup I think is typical. I only fill using the expansion tank. No cap on the radiator istelf, it's plumbed to and from the tank. If the heat/pressure goes up, coolant goes to the tank, and if too much, out the 'relief' hose when the cap gets opened. Right?

The vented cap has a metal button that simply hangs below the rubber spring loaded disk. The non vented (what I'm used to seeing) has the metal button that is touching the rubber but can be gently pulled away from the rubber.

So what do I/we use? My original is misplaced. I now have a billet specialties one on there which I'm pretty sure is non vented. It's working properly but who can explain the difference?

Any help out there?

Thanks,

rodneym