Join Date: Aug 2017
Location: San Antonio, TX
Re: Coolant Loss
Topped it off and added some additive too.
Still can't seem to build pressure, and I think that may have to do with the MityVac test cap itself. It has nothing to really seal with other than threads, so air is likely escaping.
Picked up to replacement caps from the local Ford dealer, just to have another on hand.
Truck heats up normally and thermostat opens when it should. No sign of any leakage anywhere, but I'll keep an eye on it.
It could very well be that since the old cap (looks like the original, based on the Ford part number), coolant boiled and evaporated and I caught it just in time.
I think when I get paid, I'll get the aluminum unit and flush and refill the truck with SCA-precharged Fleet Charge, since people seem to be recommending it all around.