collapsed upper radiator hose

[coxfmly]

Hello,

I was having a bit of trouble with the purge tank optics.
From the side it looked as if it was filled to the proper level but when I looked into the fill port it was at the top of the tank. It was quite odd to see it surge out of the top when from the side it was half full..

Well, It has finally purged itself and is running within specs.
Funny thing is, I drained 3 gallon, refilled with 3 gallons and in the end it required another gallon to top off. Maybe it had air in the system all along.

Thanks for all your help, Paul

[rapidoxidationman]

All told, the cooling system capacity is about 24 quarts.

[Kennedy]

Hello,

I was having a bit of trouble with the purge tank optics.
From the side it looked as if it was filled to the proper level but when I looked into the fill port it was at the top of the tank. It was quite odd to see it surge out of the top when from the side it was half full..

Well, It has finally purged itself and is running within specs.
Funny thing is, I drained 3 gallon, refilled with 3 gallons and in the end it required another gallon to top off. Maybe it had air in the system all along.

Thanks for all your help, Paul

The way that the tank is baffled it tends to allow some reserve space for expansion preventing complete fill errors. Often we fill to near the rim as it settles out to right about full once run and completely purged.

[More Power]

The spring side of the thermostat(s) should point toward the hot side of the cooling system (the engine). If you're concerned about whether the new t-stats are opening at the correct temperature, remove them from the engine and place them in a pan of water, raise the temperature, and using a cooking thermometer, see when the flow valves in each t-stat begin to open.

Back in 2016 when I had my truck's water pump replaced, the tech didn't open the air bleed valve on the t-stat housing. I asked him why. He said it wasn't necessary.... Turns out he was right. He filled the surge tank to the cold fill level, started and drove the truck around the block, then topped off the surge tank when he drove it back into the service bay. I was surprised, but it worked...