Stage 3’d the car last winter and ever since the oil temps have been way hotter driving normally. Mainly cruising on the motorway at 70, any time there’s a slight hill the temp goes up over 100c. The water temp stays pretty steady though so I don’t know why it’s happening. I’ve been toying with fitting an oil cooler but after some searching I found that uk ca’s come with built in oil coolers? Something about coolant lines running the the filter housing?
Is there a chance that I’ve got an air lock in the coolant after changing it meaning the oil gets hotter?