Water Temp Guage Install ERROR!!
Someone please help me
I didn't do anything with coolant, just removed the plug and installed the sender with some ARP teflon paste on the threads. A few drips of coolant came out with the plug out. Not enough to fill a paint can cap 1/4 full.
That plug you removed is the block drain, it's there because all the coolant doesn't come out using the radiator drain.
To refill it just put the proper amount of coolant and water back in and run it until the thermostat opens, I usually get air stuck behind the thermostat and it gets real hot before eventually purging out.

