Hi guys I changed my gearbox oil today and I'd thought I'd share a technique. Once you have drained the oil, do the drain plug back up but leave the fill plug open. Get a funnel and a length of pvc tubing. Put the end of the tubing through the engine compartment and into the gearbox fill hole. And fill using the funnel, periodically checking to see if any oil is leaking out. This way you can put the exact amount of oil in and not have to faff around under the car if like me you love using axel stands My gear box take 1.3l Saves a few Bob too.