JW51 I just buy simple green along with 1 gallon distilled water ,get an empty jug ,mix up 2 gallons of 50 % solution. The winch truck seeps ( thru a mild crack rear drivers side)so I top it off regularly that radiator is known 50 years old,still OK. An uncle of an old employer always told us to use prestone and he would show you how clean the radiator was in his old 59 chevy car. He was a winch truck builder oil field,built tail rollers using big truck spindles,they were free to roll !! OH I think it's important to run anti-freeze for water pump lube,that water pump was 50 yrs. old too.
Last edited by fixite7; 07/05/2023 1:04 PM.