Rear Diff Gear Oil for LSD?

I bought some Valvoline 75w-140 for my rear diff thinking I can do the oil change myself. Once I got under there I saw a "LSD Oil Only" sticker and checked my manual which states above 0 degrees to use SAE 90 or below 0 degrees to use SAE 80W or 80W−90.

The Valvoline 75w-140 I bought states it has limited slip additives but I want to follow the manufacturer recommendations. Any recommendations on which oils I should consider? I am in Colorado where it only occasionally gets below 0. Thanks.

 

The factory service manual says the 75-140 is for non-LSD. I’d just return it and get the right viscosity

 

Whatever you do, don't make the mistake I did and use that oil in your LSD diff.

Use Lucas 80w90 in the rear diff if it's an LSD. Save your money.

I ran what you're looking at in my LSD rear and no amount of additive would've made my rear end not chatter.

 

Just ran into this thread. How would I know if I have the lsd?

 

Mine had a yellow sticker on the rear diff stating such bit not sure how I would have known/identified it if it wasn't there

 

This may help some..
https://www.tundras.com/threads/whats-in-your-rear-end.42904/

 

Enter your VIN @ www.toyota.com/owners/ and retrieve your "as built" configuration.

 

LSD rear shouldhave a sticker indicating it assuming you're not in the rust belt and/or someone hasn't taken it off.

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mine doesn't show LSD anywhere when inputting my VIN, but has the sticker

 

Trust the sticker. Especially for Canadian users, the truck info at Toyota Owner's website isn't always correct.

 

Yeah, about that...the site stopped displaying my details correctly a while back, so I wrote them to complain. They sent me a PDF of my actual config, and that's what I refer to going forward

 

Thanks. No sticker and nothing in the spec sheet either with vin. The truck was pretty clean and original when I bought it so, I’m thinking it’s a no on the lsd since I don’t think the sticker would have been removed from the previous (original)owner.

 

I mean, even if it isn't LSD, conventional Lucas 80w90 works both ways. Thing with LSD is, there isn't much except Lucas 80w90 that works without chatter.

Not sure what you've got going on though.

 

You can pull the fill plug and look into the hole. If you can see into the carrier and see spider gears, it’s not limited slip. Also jack up the rear end while in park and spin one tire. If it doesn’t spin it’s LSD. If the other wheel spins the opposite direction it’s not LSD unless your clutch pack is toast.

 

I vote for a peek inside the bung-hole.

 

Motul 90pa being the other fluid I know works.