Heater core install

[rodo]

Is it advisable to use any kind of sealant when installing the new pipes and gaskets to the heater core?

[lglade]

I think you need a couple of these:
https://autoricambi.us/collections/cool ... ber-gasket

This one is from Autoricambi, but all of our trusty vendors sell them.

[rodo]

Already got 'em. I'm wondering if anyone uses any sealant in addition to the gaskets. Or, can it be that gaskets are enough?

[lglade]

I didn't use any sealant when I replaced mine two years ago.

[rodo]

lglade, how tight did you tighten the nuts and bolts that hold the pipes to the core? I know I don't want to overtighten but...how does one tell what is tight enough?

[lglade]

I don't remember how much torque I applied (and my shop manual didn't show one, either) but it wasn't much--just enough to get some compression on the gasket and stop.