Changing gearbox oil. I found that the best way to drain the oil is without taking the wheels off, this stop the oil from cooling down. It’s difficult enough to get the oil when it’s hot, nearly impossible when cold. It’s fairly easy to do without removing the wheel and then it’s easier to raise the driver side to drain the oil. Also, make sure you have: -a length of tubing 8mm approx. diameter -some PTFE thread seal tape to seal where the tube goes into the gearbox - a funnel to attach to the tube -2.15 litres of oil -three washers, I can’t remember the diameters, sorry. Get a bag of different sizes perhaps? I took the bolts out and then drove to the shop in my other car.