75-90 to 75-90 syntheic

[mattmctree@gmail.com]

im changing the fluids on my 09 tacoma and the diffs and t case and tranny call for 75-90 gear oil however nobody around stocks it in regular oil i can only get it in synthetic. are there any issues with changing from regular to synthetic

[RiverPatrol]

You should be ok on a vehicle that recent. Don't ever try it on a Patrol though.

[mattmctree@gmail.com]

not that i would but out of curiosity what would happen to a patrol if you did?

[RiverPatrol]

The seals and gaskets on the Patrol weren't designed for synthetic oils. Plus the fact that they are 50 years old, introducing something different will just cause them to fail. I am still dealing with the results of a previous owner doing that on one of my Patrols; significant leaks in places you never would have considered.