Rear Differential & Transfer Case DIY
I found a gear oil pump at Advanced Auto that has a smaller body that will screw right on the smaller quart bottles and gallon jugs. I don't know why Autozone does not carry them since most DIY oil is pumped out of quarts.

Very similar to this:


I took someone's advice on here and got a 15/16 wrench from Ace Hardware it's their "Pro Series" to do the transfer case drain. It has a very thin walled box end and fit the plug with no grinding (worked on by brother-in law's RX330 too).
Also I got a drain plug socket set from Harbor Freight that allows you to use a 1/2 wrench or even a breaker bar if needed to get the other plugs loose, works on the tranny plug too.

Just my 2 cents.
Your DIY write ups are the best I have ever seen, the pics make these jobs so much easier, thanks!
I found a gear oil pump at Advanced Auto that has a smaller body that will screw right on the smaller quart bottles and gallon jugs. I don't know why Autozone does not carry them since most DIY oil is pumped out of quarts.

Very similar to this:


I took someone's advice on here and got a 15/16 wrench from Ace Hardware it's their "Pro Series" to do the transfer case drain. It has a very thin walled box end and fit the plug with no grinding (worked on by brother-in law's RX330 too).
Also I got a drain plug socket set from Harbor Freight that allows you to use a 1/2 wrench or even a breaker bar if needed to get the other plugs loose, works on the tranny plug too.

Just my 2 cents.
Your DIY write ups are the best I have ever seen, the pics make these jobs so much easier, thanks!
Harbor Freight is great, they have a store just a few miles south of me...great prices.
For front differential, which sits behind the tranny pan, only ATF, either Toyota Type IV or Amsoil ATF. Both the front differential and transmission are interconncted in terms of their fluid (even though they have separate drain plugs) and they are filled through the tranny dipstick (don't worry whatever you pour in will trickle on over to the front differential).
Don't pour gear fluid into the tranny dipstick. This is an error as we noted previously.
Don't pour gear fluid into the tranny dipstick. This is an error as we noted previously.
_____________Hi Lemex, I have 98 camry v6, and I want to change the transmission fluid, beside the tranny pan drain plug, what else i have to drian? and is it the differential fluid and tranny fluid use the same fluid for front wheel drive? please help.
Don't pour gear fluid into the tranny dipstick. This is an error as we noted previously.
_____________Hi Lemex, I have 98 camry v6, and I want to change the transmission fluid, beside the tranny pan drain plug, what else i have to drian? and is it the differential fluid and tranny fluid use the same fluid for front wheel drive? please help.
I know, because my uncle the first time we looked at it, was wondering if gear oil was supposed to go back there and that's how we actually found a separate, but inconspicuous fill hole on the back of the tranny above the front differential area.
With your Camry V6, you should have both plugs like on my RX300 as below. I believe it's the 4 cylinder version, the 2.2 Camry, that doesn't have this setup. The differential and the tranny use the same fluid. To explain this right so I don't confuse you, there are two drain plugs as you see below, but the transmission fluid for both areas is filled via the tranny dipstick at the top. The fluid trickles over to the front differential area (Takes up to 30 seconds from my experiment once in Mexico, where you can close up the tranny pan plug, leave the front differential plug open and watch fluid poured in the dipstick at the top come out the front differential plug, shown at left below).
Now, I did mention earlier that I found on the back of the transmission a separate fill hole. Don't concern yourself with this. It is our opinion that this was done for some factory reason in assembly. Just drain the two plugs and then fill up the tranny dipstick from the top.
I did my rear differential oil and transfer case oil change today on my 50k+ miles RX300 AWD. I replaced the original oil with Mobil 1 synthetic. It took me about 4 hrs in all including a short nap under the truck
. The transfer case is short of oil by about a quarter and the oil is muddy. I put my little finger in the drain outlet and I can feel the sludge.It's nice to have the tools ready beforehand and it made the job a lot easier. The hardest part is in putting back the filler plug. I didn't have much room for my small hands. Overall, it was well worth the price I save should I have sent it to the dealer.
Celebrating Lexus & Toyota from Around the Globe
I bought a new plug a Toyota dealer as the Lexus dealer was out of stock. The plug has been upgraded since 2003; it has a steel head that should be much tougher than the brass. It's still awfully thin though. All in all, a diabolical combination of a thin head in soft metal in a narrow recess in the case. I'm glad it's over.
https://www.clublexus.com/forums/rx-...oval-help.html
Harbor Freight is great, they have a store just a few miles south of me...great prices.
Last edited by onseytote; Aug 5, 2010 at 04:12 PM.









