Tune up on a 99 f350 7.3. What should I do?
#21
#22
if you got the truck 4 years ago i'd flush the coolant if you havent since you owned it. just a quick bit on coolant. i believe the reccommended time is 5 years. when it goes bad the ph goes up (cant exactly remember if its up or down) and it causes rust in the passages it travels through. Rust is never good so change it. you obviously care about your truck even though its not your daily driver so drain the cooling system. run straight water through the radiator until it comes out clean. then fill it up 50/50
#23
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