Hi, my truck is 99.5 Pathfinder, 4WD, 3.3L V6, VG33E. Today I changed the front/rear LSD oil and transfer fluid at a garage, the guy changed all fluid with the same oil - Castrol synthetic 75w90 gear oil(GL-5) and told me there is no problem(??). But the service manual says A/T oil is recommended for the transfer case, would it cause any potential transfer case damage if gear oil is used?
He also changed the front differential fluid using half Castrol synthetic 75w90 gear oil and half conventional gear oil, would it be OK? I don't use 4WD mode a lot anyway, If it is OK, I would just leave the front LSD oil as is.
Any advises would be appreciated.