My mom is going to change her radiator fluid but being the widow of a
mechanic she knows to check things out first. Issue: she cant find the
radiator cap on the radiator itself, but she says there is a pressure
cap on the reservoir tank. is there no cap on the radiator itself? This
seems unusual to me but i have not been a mechanic sinse HEI came out
in the 70s so any help is appreciated here.