Drove to Essendine to meet a restorer this afternoon. It was warm and sunny.
After driving down to Peterborough on the back roads I noticed a smell of hot gear oil as I got out of the car. The diff was very hot to the touch and all the heat was in and around it. It always has a thin film of oil on it.
I'm not sure if the heat from the inboard rear discs (they sit either side of the diff casing) is causing the smell. There is no rumble or whine from the final drive, but a slight clunk when power is transferred.
Please God, don't let it be a diff-out job again!