FIXED: I came back to a day later, needed 1/4 gallon more coolant and burped for 10 minutes and now it's fine. There might still be a leak in the radiator/cap/hose, but atm it's fixed.
Does that point to a specific problem? Can I drive a few miles without cap on?
00 subaru outback. Started overheating while driving. There was coolant everywhere, it looked like the resovoir cap got loose and it spit it everywhere.
Radiator was pretty empty, filled it up with coolant. Rev'd engine with cap off and it didn't overheat after minutes of reving. As soon as cap goes on, it overheats.
I know I need to buy a pressure kit for specific anwers, just curious if the cap off points to a specific problem.