Drove 1,200mi over two days, I-5 from So Cal to Washington State, easy highway miles, stayed below 70mph the whole way.

Couple months ago i had the waterpump replaced and all temps as they should be.

About 400 miles into the second day, stopped for a stretch, opened the hood to find cooolant had been blown out of the reservoir over flow tube onto the driver side of engine compartment.

Removed the pressure cap and found the top radiator hose was empty, not dry.

Pulled the cap off the reservoir tank and it was full, about 3 inches from the filler neck.

Filled the radiator hose until almost full and continued the drive, no high temps or even one degree past normal was ever indicated throughout the entire trip.

Got to final destination and found considerably less coolant had tossed out of the overflow tube, and again, empty radiator hose, and full reservoir.

Any suggestions?

Thanks in advance,

WBF

 

The coolant system itself is a closed system that doesn't usually rise above 6 ~ 10psi, and the USUAL culprit for spewing coolant would be a clog or a blown headgasket. A clog would usually show a temperature spike and sometimes cause overheating. Does there appear to be any oil-y traces in the coolant? Also, check your oil itself. The headgasket could have just blown from the combustion chamber to the cooling jacket, but a lot of times it'll find it's way to the oil as well.

 

OH MAN! That's not the reply i was hoping for.

Oil and Coolant are contaminant free.