Went to the local autoparts store today and i couldn't find the highly recommended Redline MT-90 for the Transmission and the Redline 75w-90 for the differential.

all i found was a lucasoil 75w-90 that said it exceeds gl-4 and gl-5 standards and at another shop i found a mobil 1 75w-90 synthetic gear oil and a vavoline 75w-90 synthetic gear oil

i want to use synthetic oil but i dont know which one i should use. Can i use the same one for both the transmission and the differential?

 

Go to a speed shop, they will have what you are looking for.
Better yet, go to redline's website, and look for the nearest shop to you that sells it on their dealer locator tool, and now you will know where there's a speed shop close by.

BC.

 

amazon.com, free 2 day shipping if you have a prime membership.

MT-90 - 14.49

75w90 - 13.95

 

mt90 made my tranny crunch between 3rd and 4th