'06 Tundra Rear Diff Blackstone Report

[GunnyE7T]

This is the report for my 2006 Tundra rear diff.

This is the original factory rear diff oil.

Mileage was 18,500.

Replaced with Amsoil 75W90 SVT w/Amsoil Slip Lock Additive.

My Tundra has the Limited Slip rear diff.
It is not an electronically controlled diff.

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[Lonnie]

This is why I change engine, trans and diff fluids when I get home with a new truck.

 

[Steve S]

I will go up to a 2,000 miles .The oil still gets real bad looking when I change it again in a year . After that the oil seems cleaner when doing the recommended or longer oil change intervals

 

[unDummy]

Is it me, or are there used oil analysis popping up everywhere except the used oil analysis section?

I too believe that factory fill should be dumped at a reasonable mileage and upgraded if possible. A simple removal of initial break-in wear is smart.

I've pulled fluid from various Tundra/Sequ 'ends. It never looks good and the drainplug magnet always has a 1/2 peanut seed sized dome of metal powder along with occassional metal splinters. Makes me wonder if 110wt would be a better choice, and definitely a no-brainer if the truck is worked.

18k miles is a pretty low run. Iron is nuts but normal for factory fill.

 

[Steve S]

Quote:

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Is it me, or are there used oil analysis popping up everywhere except the used oil analysis section?

I too believe that factory fill should be dumped at a reasonable mileage and upgraded if possible. A simple removal of initial break-in wear is smart.

I've pulled fluid from various Tundra/Sequ 'ends. It never looks good and the drainplug magnet always has a 1/2 peanut seed sized dome of metal powder along with occassional metal splinters. Makes me wonder if 110wt would be a better choice, and definitely a no-brainer if the truck is worked.

18k miles is a pretty low run. Iron is nuts but normal for factory fill.

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Diffs. with 85/140 look the same .

 

[JohnBrowning]

It will be much lower from here on out. This is why people in the know change out transmission fluid,T/Case and diff fluids at 10,000 miles from OEM. Gears wear in much more then an engine could ever hope to the first 10,000 miles. You should see how hot a new vechiles rear diff can get going 70-90MPH onthe way home from the dealership!!! The only way around this is to spend a lot of time lapping the gear that mesh like the ring and pinon.

 

[mikeg5]

good thing i dont buy new cars haha.. but thats a good rule of thumb to switch everything out before 10k miles. just remember if its under warranty to follow warranty regulations and you should be ok

 

[Hirev]

Thanks for the report. I got the same 06 truck also with LS. The 438 of iron is interesting. Not much of a base to judge if this is normal or not. I suspect its not bad for a 1st oil change. I guess Toyota's recommend 15,000 mile OCI for the limited slip differential is probably a good one. I'm going to change mine soon and thinking about trying one of the new XXw-110 if I can get it locally. If not I may try a XXw-140wt on advice I'm getting from a local Differential/ manual transmission expert who is telling me to go heaver than XXw-90Wt on this rearend in the Tundra with the V8 for best durability. He has done good work for me over the years on Muscle cars so I respect his opinion.

 

[hatcoleman]

FOR MY 03 MODEL MANUAL SPECS 75W140 SYNTHETIC. DOES YOUR MANUAL SPEC 75W90 ???

 

[Hirev]

In my 06 manual it specifies a synthetic 75w 140 for the standard differential (non LS). It also goes on to state a straight 90wt above 0 degrees F for the mechanical limited slip differential. Mine has the mechanical limited slip.

 

[mikeg5]

for you guys with toyota truck go to this discussion forum lots of guys there that know their stuff www.ultimateyota.com