Thanks to all who responded to this question.

Erik,
You state replace fluids about 30k.
30k WOULD take about 3 years for me.
So, am I ok to assume?
replace every fluid (except oil, synthetic - 5K)
in about 30 K

Eleet,
Again thanks for your post.

Why use Syntec 10w-40 ??


Thanks to all

Sometimes syntec cheaper than mobil, they are both very good oils - I've used both in one engine I've had for a very long time and it shows no wear on the valvetrain.

There is an article about oil on carbibles.com.

Me too. So I switched from Mobil 1 syn grease back to Kendall SuperBlu grease for the driveline (11 zerks).

It's Synchromax (not Synchromesh) High Perf. MT Fluid. I swapped it into both center boxes last Friday. I was not enthused by the grit in the drain pan when I emptied the transmission, but it seems to be a really nice oil after driving it a few hundred miles.

Even with age and wear, shifting is smoother through the 5 and in and out of 4wd. It pulls 80 pretty easily again. The only disconcerting thing is that there isn't a weight listing on the bottle and is recommended for vehicles that use ATF as well as weighted and unweighted motor oils. It pours like a 75/90. Their site probably gives an equivalent, but smoother shifting and better power delivery seem to sell it for me.

Ooo Great! More choices.

So IT is Redline VERSUS Royal Purple.
Which is better?? Equal may be?

I just put Redline MT-90 into my T100 manual trans.
Planning on putting same MT-90 into transfer case.

Planning on putting Redline 75W90 to both differentials.

NOT sure about 75W90NS eleet mention earlier (no friction modifiers).

How do I check the type of differentials: conventional or limited-slip?


As I mentioned above IÆm set on Redline at this time.
The problem is there is no Redline product on the shelf around my location (Western Mass).

And Royal Purple IS available.

I have found local store able to order Redline for me.
For example: 1 qt of MT-90 about $15.00
Royal Purple: 1 qt of Synchromax $12.59 in local NAPA.

So you would say stick to Royal Purple.

BUT, I have found this http://www.morethantires.com/Redline_Oil.html
Every qt about $9.95 with about $8.00 for shipping.
When if I buying large qty (4 qt for MT and transfer, 6 qt for both diff) IÆm adding less then a buck/qt.


Now for the last:
Owner manual recommends for Differential:
Front (oil viscosity)
SAE 75W-90
Rear
Above û(minus)18 Celsius
SAE 90

Am I still OK with Redline 75W90 for rear?


Thanks

I would say I used Royal Purple because it was on the shelf, and I tend to buy locally as much as possible. I have not had good luck shipping small quantities of fluids up here, especially in the winter.

I have heard good things about RP, but not specifically from Toyota owners. So far, so good. I imagine it is comparable to the Redline. It advertises that its components are kinder to soft metals (brass synchros) than garden variety 75/90, which is the selling point of Redline as I understand.

You're fine with 75/90 in the differentials.