For everyone's benefit here are the part numbers for the gaskets that should be replaced when performing a drain and fill of your gear boxes. My Toyota parts guy was not well versed so it took two trips to get this right.
Front Transaxle –
Drain: 90430-24003 (copper flat washer/gasket)
Fill: 12157-10010 (metal crush washer/gasket)
Transfer Case –
Drain: 90430-18008 (aluminum crush washer/gasket)
Fill: 90430-18008 (aluminum crush washer/gasket)
Rear Differential –
Drain: 12157-10010 (metal crush washer/gasket)
Fill: 12157-10010 (metal crush washer/gasket)
Transmission –
Drain: 35178-30010 (metal crush washer/gasket)
I drained and filled all my gear boxes with AMSOIL Severe Gear SAE 75W90 Synthetic Extreme Pressure Lubricant (SVG-QT). I added AMSOIL Slip-Lock Differential Additive to the rear end even though AMSOIL states "Compatible with convential and synthetic gear lubes and most limited slip differentials. If limited slip chatter occurs, add AMSOIL Slip-Lock additive." I did not feel like crawling back underneath this winter only to drain enough gear oil out to add the 4 oz. of additive.
I haven't done the transmission yet. I may just have the dealer do a BG trainny flush and fill, then on the next flush at 60K use the AMSOIL trainny fluid. (Have had no problems with it in my GM cars/van)
Have fun!
- Max
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Originally Posted by DevinSixtySeven
grunt ugh! ug ug, grunt! lucky for you, i did this last night  .
...get a 24mm socket and a breaker bar. attack the rear fill plug first (never go for the drain plug first, if it comes out and not the fill, yer up a certain creek), once it's out, attack the drain plug. clean both plugs (they both contain a magnet), replace drain plug (torque to 39ft#), add ~3L oil (add until it just barely dribbles out the hole), replace fill plug (39ft#). while you're at it, extend the rear diff breather up to the engine compartment, it's good for your immortal soul, or at least for the rear diff.
now grab a 10mm hex key on a 3/8" drive, a socket wrench and a breaker bar. drop the front skid plate so you can jump the front diff, and break loose the fill plug, its in front. if it doesn't come out at once, curse at it, and it'll come clean. make sure to bang your knuckles a few times on the crossmembers and engine block--gloves are handy here, 'specially the real snug 'mechanix' gloves. once that's out, remove the drain plug, it faces the driver's side. clean plugs, replace drain (48ft#), pump 1.15L fluid in to front diff using a fi-dollah diff lube pump from napautoboys or wherever, stop when a little bit dribbles out, replace fill plug (29ft#), clean up dribbles, move to t-case.
t-case plugs are both at back of case, remove fill, then drain, clean and replace drain (27ft#), fill w/1L fluid, replace fill plug (27ft#), clean and degrease everything, replace skid plate if you had to drop it to do the front diff.
now kick your feet up and have a beer.
-sean with a shop manual |