I have already drained my differential by removing the cover. I cleaned the cover by wiping it with a clean cloth and then spray 3M Brake cleaner then wiped it complete dry. It is free of all lint. Will it harm the gears and or bearings if I use the the same on them? Or use WD40? Or should I use nothing. I need some advice quickly as I have a concert to go yo tonight!! I thank you in advance for your help!