My hoses are swelling some, and causing them to leak at the head, where the thermo housing is..I'm wondering is 1.1bar the correct pressure cap for a D15b7? I'm pretty sure the thermostat is having a problem and is stuck open because the car cools off as I drive down the road with the heat on, like all the way back down to C. Anyone have any suggestions, it didn't swell the hoses like that until after new radiator and cap were installed.

 

its you thermostat. get the $6 and 10 minutes to change it and you will be much happier

 

Thanks for the reply, can anyone explain to me what exactly happend? My lower radiator hose is hot, so I'm guessing the thing is stuck open?