my 93 ranger 4.0 lossing coolent not leaking not in oil if i take oil fcap off its full of white suff on the cap just starting to get warmer then usual what the odds the heads craked

 

has not over heated yet so i going to replace the head gasket

 

you have far more serious problems here

milky coolant indicates a lot of coolant in your engine oil

you probably have a potential crankshaft bearing failures in the future

you would be better to have the entire engine rebuilt