Finally got a Cobslt SS and looking to do all the usual maintenance to establish a good baseline for the car, so that includes changing the transmission fluid. There’s tons of write ups on that so that’s no problem however no post has mentioned if you have to fill the front differential separately as well? The only other FWD car I’ve worked on required that the diff be filled separately from the trans and I want to avoid running anything dry. Thanks for any advice!

 

The diff is sealed so the fluid cannot be changed unless removed. There is no need to add any LSD lubrication modifiers to the transmission fluid.