ADRD Differential Question

[Gebo]

How do I know if my 2002 4Runner has a "Automatic Disconnecting Differential" (ADRD)?

 

[Gebo]

The reason I’m asking is it apparently makes a difference in choosing my gear oil.

I am assuming ADRD means I don’t have to get out of my car to lock and unlock the front hubs????

 

[GSCJR]

75w-90 is okay for either diff.

 

[Greasymechtech]

Do you have manual hubs up front?

ADD= attention... nevermind.... call it auto hubs would've been easier

And, there is no special or different gear oil for it. So, it makes no difference if you have ADD or not.

Regardless. For an open diff, I'd recommend any GL-5 non-LS gear oil. Grade is for you to decide.

 

[fantastic]

Do you have a door jam sticker that displays the axle code? I would try to narrow down that code to figure out which one you had & go from there.

 

[Gebo]

Do you have manual hubs up front?

ADD= attention... nevermind.... call it auto hubs would've been easier

And, there is no special or different gear oil for it. So, it makes no difference if you have ADD or not.

Regardless. For an open diff, I'd recommend any GL-5 non-LS gear oil. Grade is for you to decide.

No. Mine operates by buttons from inside the cab.

 

[Greasymechtech]

Buttons doesn't mean a thing

Its a great book worth a read:
https://assets.sia.toyota.com/publications/en/om-s/OM35787U/pdf/OM35787U.pdf

 

[Gebo]

I know I can use all 3 of the Amsoil SVG. From my understanding, it appears that 80w-90 is preferred over the 75w-90 for the front
diff w/o ADRD.

 

[Gebo]

Buttons doesn't mean a thing

Its a great book worth a read:
https://assets.sia.toyota.com/publications/en/om-s/OM35787U/pdf/OM35787U.pdf

I have read it so many times I almost have it memorized. I have taken my owner's manuals to bed with me.


Just didn't know what "ADRD" means.

Buttons doesn't mean a thing

Its a great book worth a read:
https://assets.sia.toyota.com/publications/en/om-s/OM35787U/pdf/OM35787U.pdf

Sometimes my buttons get pushed and it means a lot.

 

[fantastic]

I know I can use all 3 of the Amsoil SVG. From my understanding, it appears that 80w-90 is preferred over the 75w-90 for the front
diff w/o ADRD.

But 75-90 is usually a synthetic where a 80-90w is usually a conventional type if that matters to you.

 

[Greasymechtech]

There is no mention of A.D.R.D. in the manual. There is mention of A.D.D. in the manual.

There is no mention of a preferred or separate gear oil in the manual whether you have ADD or not.

The button doesn't determine the fluid needed, if that is what you associate with 'not having to step out of vehicle'.

If you had the manual memorized, then you would have the answer to your own thread. And, you would know what ADD was... that button that means you don't need to step out of vehicle and manual lock hubs.

 

[Gebo]

You are correct for the most part. However, Amsoil makes 89w-90.

 

[Gebo]

There is no mention of A.D.R.D. in the manual. There is mention of A.D.D. in the manual.

There is no mention of a preferred or separate gear oil in the manual whether you have ADD or not.

The button doesn't determine the fluid needed, if that is what you associate with 'not having to step out of vehicle'.

If you had the manual memorized, then you would have the answer to your own thread. And, you would know what ADD was... that button that means you don't need to step out of vehicle and manual lock hubs.

I apologize as I ain’t quite as knowledgeable as you. I thank you for helping me.

The reason I asked is based on my looking around on Amsoil’s recommendations for gear oil on my 2002 4Runner. I had never heard of “ADRD.”

 

[Greasymechtech]

I would use 75w110 in both diffs and xfer case in that Toyota. I'd even consider a 75w140 in the rear diff if the vehicle is worked(tows). And then, I'd thumb my nose at the MPG gods.

Amsoil, Redline, Driven... have GL-5 75w110's. I use 75w140 in place of 75w90 and 75w85's recommended in my Toyotas but I am a little further south.

I have never purposely searched for 80w90 or SAE90. Before the SAEJ306 grade splitting, some of those 90's were equivalent to 110's today.

 

[Gebo]

What gear oil would you use in the other vehicles in my sig?

 

[Greasymechtech]

Unless 140 was recommended, I'd use the 110 everywhere in place of a 90 as a starting point. Toyota also has some xfer cases that do not use gear oil.