BMW 5 Series Rear Differential Drain and Fill Easy!!

[@JoseDiaz-lg4fn]

I know nothing and thanks to KZbin I truly think I saved my Bby 525i 2004 I change my own transmission oil and pump some new transmission oil in it got real well and also Change my own spark plugs, and coil packs only this I have no a/c I took it to fire stone they said it was my belt which I have with me and my truck Belt / 67305 Compressor reman and an ac recharge they talking around 1,691.92 I wish I can do that my self

[@JoseDiaz-lg4fn]

I have the same model of car I can do this my self what’s this done for I never seen anybody feel up oil threw the back ?

[@Testimony_God_is_real-kingdom1]

Blessings I have a 07 525i BMW, I changed the ignition coil, solenoids ,the valvetronic gasket. But my car won't start will Crank but no start?