Hello Gentlemen, I'm installing a T-Stat & Gskt as well as the "O"-ring for the Waterpump Housing, Which Permatex silicone product should I use? There seems to be a lote of choices. I'd like to get close to O.E..... Oh also, should I use silicone on the Water Pump Gskt?? Thank you, Chris.
I just used the bare gasket for the thermostat housing, and merely slipped the bare slotted rubber O-ring around the thermostat's outer edge. Everything worked out just fine with no goo. The thermostat housing bleeder bolt is a brilliant design. Just leave the cap on the reservoir to maintain a vacuum, and when you have put the new thermostat back in and tightened down the housing you merely remove the bleeder bolt and then the reservoir cap. This opens the vacuum. Once the air bleeds out of the bleeder bolt hole and is replaced by coolant, simply reinstall the bleeder bolt and then put back the reservoir cap -- done. Kind Regards, Chris