Hey guys, just tossing around ideas of what could be my issue.
Car: R32 GTS-T
Issue: poorly operating heater, bubbling in the overflow bottle after engine shuts off, and a drop in the level of coolant in the radiator.
Thoughts? There is no oil in the coolant or vice versa, so its not a head gasket issue... Ive gotta take it on a road trip (1000km) this weekend so fixing this issue before then would be ideal