I have just been under my 328 adjusting clutch and fixing oil leak from pan studs etc. and decided to loosen up all the fill and drain plugs (there are 4 of course) ready for the gearbox oil. Now I have to put everything back together and put the wheels on, remove axle stands etc. just to get the oil warm, then do it all over again. Got me to thinking if anyone is doing this oil change with the car cold ? what do dealers do, take the car for a run before doing the change ?? I know the oil thins and drains more easily when hot, but I am wondering if it is worth all the extra effort from where I am now ??