buying a 2010 lgt tomorrow 39000 miles want to change all fluids help please.

okay guys , first off ive had a 2011 wrx brand new and totaled it saved my life so now im jumping into this legacy gt im a stickler about my fluids and want to change tranny, rear diff, and motor oil .. for the engine i still have a case of mazda rx8 filters from my wrx and some 5w-30 mobile1 (im in florida) rear diff is a no brainer ima give it some mobile1 75w-90 gear oil, but what do i do about the tranny theres 2 drain plugs?? t70 or 21 mm? what fluid should i use? do i fill threw the dip stick if there is one ??? help please ive been on here searching for a tranny how to for the 2010+ lgt's for over an hour .. thanks fellow boobaru owners!!!

I believe the walkthru would be about the same as the 4th gen.

Is your car an Automatic ? The big Torx plug is the front diff if your car is an Automatic.

Originally Posted by GTPpilot

I believe the walkthru would be about the same as the 4th gen.

Is your car an Automatic ? The big Torx plug is the front diff if your car is an Automatic.

In 2010 the LGT was only available in MT.

With that said, we have not seen Mobil 1 gear lubes be all that great. We've had significantly better outcomes with motul gear300, amsoil severe gear, and Subaru extraS pretty much in that order.

-Mike Paisan


11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.
Call directly as We carry almost every manufacturer now, so before you buy parts call us.
Like us on Facebook! | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Direct Jobber |AIM: AZP Installs
"Race Tested, Enthusiast Approved!"

If you want to use Mobil1, try their 0W-40, TDT 5W-40, or any of the High Mileage oils. If you have a manual, do NOT use Mobil1 in the transmission. The best Mobil for the transmission is Mobil Delvac synthetic. The regular Mobil1 has friction modifiers and can be too slippery for the synchro's to engage properly.

-Dennis