Gear grease ?

G

Gstick

Member
Time to change my transfer case and differential fluids. I have a 2010 4R, SR5, 4x4. It doesn't say on my original window sticker if I have "limited slip" differentials, so I gave my VIN to the parts guy @ my local dealer, and he doesn't know if I have the "limited slip" option. How do I know if I have differentials with limited slip or not ?

The price difference for the Toyota "OEM" 75W-85 GL-5 differential fluids are :

$78.30 per quart for the limited slip part # 08885-02606

$36.79 per quart for the non limited slip part # 08885-02506

Are most of you all putting in the "genuine" Toyota oil, or an aftermarket brand ? By the way, I did buy the Toyota Transfer case oil part # 08885-81080 which was $88 for a 1 liter can.

Also, do I need any special tools to do this service myself ?
 
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Gstick said:
$78.30 per quart for the limited slip part # 08885-02606

$36.79 per quart for the non limited slip part # 08885-02506

... Toyota Transfer case oil part # 08885-81080 which was $88 for a 1 liter can.
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Holy crap. Dude, may I introduce you to a cool little store called Autozone? Or NAPA, or Checker, or Oreillys, or even Walmart for gods sake. $80 for a liter of gear oil is ridiculous.

Somebody else will come say shortly, but I'm 99% sure that you don't have a limited slip diff, and I'm 100% sure that if your parts guy couldn't tell you that you need to never ever go back there again.
 
If you want to be anal about putting 75w 85 vs. the more common 75w 90 gear oil, the only one I've found is Redline Synthetic. It's more expensive than 75w 80 but not crazy like those dealer prices. You can Google it and buy it online. And no, you don't have a limited slip. 5th Gen 4Runners have either open or elocker diffs (Trail Edition).
 
KidVermicious said:
Holy crap. Dude, may I introduce you to a cool little store called Autozone? Or NAPA, or Checker, or Oreillys, or even Walmart for gods sake. $80 for a liter of gear oil is ridiculous.

Somebody else will come say shortly, but I'm 99% sure that you don't have a limited slip diff, and I'm 100% sure that if your parts guy couldn't tell you that you need to never ever go back there again.
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Just quoting the prices for "Genuine" Toyota fluids. Some people like to use the OEM stuff. What brand & weight do you use in your differentials ?
 
Gstick said:
Just quoting the prices for "Genuine" Toyota fluids. Some people like to use the OEM stuff. What brand & weight do you use in your differentials ?
Click to expand...

Whatever's cheap. The only place I pony up for the good stuff (Redline MT90) is in my transmission, because my old junk doesn't like GL5. The diffs and tcase get bottom shelf generic 75w90.
 
And I'm just the opposite of Kevin!

I use Royal Purple for everything in my old truck, but it sits for months without being driven, so I use good stuff just to make sure I don't have to change it for years!

And, for anyone who DOES have a limited slip diff and found this thread, just use regular diff oil and buy a small bottle of this stuff:

http://www.amazon.com/Red-Line-80301-Friction-Modifier/dp/B000CPCBGE/ref=sr_1_1?ie=UTF8

This way, you can buy whatever brand you fancy, and with a little of that friction modifier in it, it becomes "limited slip diff oil"!
 
An alternative to the Toyota product(maybe) & Red Line & for those who insist on sticking with the weight specified in the owners manual - 75W85 - go to amazon.com and issue the following in their search field:

75W85

You'll find 75W85 from the following:

ACDelco
Chrysler
GM(likely ACDelco)
Honda
Mercedes-Benz
Nissan

On Amazon - qt. pricing for these ranges from about $19 to $55. I'll let you guess which one of these is $55.

No doubt you could also go to one of these local car dealers. I've seen the ACDelco 75W85 in a local parts house. Didn't price it.

I didn't bother comparing the specs of any of these products to the Toyota 75W85.

I'll be content to use somebodies 75W-90 from Walmart.
 
Hi [MENTION=50354]Gstick[/MENTION],

My name is Brian, I am an Amsoil vendor here on T4R. Not sure if you have considered Amsoil for you Diff's and T-case service. Let me know if you would like more info on Amsoil products and T4R member pricing?
 
Keep us posted how you do. How many miles? Every time I've dropped the diff/transfer case fluid on my toyota's the gear oil is as clean as when it went in. Shouldn't need any special tools... maybe an a metric allen wrench. Good idea to make sure you can get fill caps off before draining.
 
Limited Slip Diff oil vs. Regular

I recently changed out my rear diff oil on my 14' Trail, which does not have the Limited Slip Differential. I put in 75w90 w/ LSD oil from Mobile 1.

Two questions: 1) will this hurt anything since I don't have the LSD? turns out I should be fine after a little research on the interwebz 2) I sincerely think my fuel economy was reduced from this by about .5-1 MPG. Any thoughts on that? or am I crazy?I must be crazy!

This was my first time changing diff oil, and I just want to make sure I am not messing anything up.
 
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Well, I guess it could be possible, friction modifier, which is what makes a gear oil a "limited slip" gear oil, is sort of a sticky substance that keeps lsd clutchpacks from chattering and chewing themselves up. Its like putting honey into vegetable oil!

This means that there's a slight bit more friction between the gears, and I suppose it could create more drag, enough to pull your mileage down slightly, but I can't imagine that really actually happening.

I do know that putting an lsd-type of oil into my 87's manual transmission made it impossible to shift, as the syncros would not synchronize properly! It felt very sluggish in the trans (very hard to explain the feeling of shifting with that oil), and I immediately drained and refilled with regular gear oil, all went back to normal with no weird syncro issues not letting me get it into gears!
 
Changing the rear dif fluid is easier than an oil change. No need to jack up the truck even. Make sure you've got a decent breaker bar and a fluid pump makes things easier. A couple of us have posted pics on our diff fluid changes and you'll find gasket part numbers in this thread.
I chose Delvac after hearing good things about it on the FJ forums...and it's popular with older Porsches. I've got over 20k since I did the rear change with no issues.
My dealer wouldn't even order the Toyota stuff for me when I was looking into it, thankfully. They just use whatever crap they've got lying around, I guess.
 
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