code:
Toyota Tundra
4.7L V-8 (2UZ-FE)
Vehicle miles: 47,650
Transmission Miles: 25,064
Miles on oil: 25,064
Life of oil: 25 Months
Lab: Blackstone
“This is the first sample from the unit, and from
what we can tell at first glance, it appears to be
in good shape. Wear levels were fine for a
wear-in sample and show no obvious problems. You
can expect high wear at first, as new parts break
in. Everything should drop next sample. The lead
is from making compound used at the factory. You
should not have any problems running the next oil
a normal interval. Check back to monitor. Sorry
to hear you had to have the transmission
replaced!”
Actual Universal Average
Aluminum 7 14
Chromium 0 0
Iron 26 30
Copper 34 67
Lead 26 13
Tin 2 2
Moly 0 1
Nickel 0 0
Manganese 0 0
Silver 0 0
Titanium 0 0
Potassium 12 1
Boron 59 45
Silicon 23 18
Sodium 5 4
Calcium 81 536
Magnesium 7 29
Phosph 257 387
Zinc 25 264
Barium 3 3
Sub Viscosity @ 210 = 44.8
Should be 42-51
Flashpoint = 390
Should be >335
Water = 0.0
Should be
Insolubles = TR
Should be
When you say 30K is a good change interval, do you mean a pan only drain or a full fluid replacement? Just curious what your opinion is.quote:
Originally posted by TR3-2001SE:
Looks very good for 25,000 miles. You should have good luck with this one. I think about 30,000 mile changes are good in almost any transmission.
Thanks for the opinion. Even though the last transmission was covered under warranty, it is still disconcerting. I am not sure how long this replacement transmission is covered under warranty, but I don’t want to keep replacing transmissions. I didn’t get the opportunity to drain the first transmission before it blew up, so maybe I just got a lemon tranny. I agree 15K is probably excessive, but it’s not going to break me with the few miles I put on the truck. At least my transmission has a dipstick to make it easier (If I recall, they removed the dipstick when they went to the T-IV fluid). I also installed a magnafine filter when I did the flush. I am interested to see what it picks up (if I can figure out how to open it – that thing is plastic but it is built like a tank).quote:
Originally posted by flathead6:
While I don't use Amsoil's universal ATF, it is synthetic and enjoys an excellent reputation. My Tundra is an '03, so it requires T-IV, which is likely not synthetic. Therefore, I pan drain mine every 15,000 miles, which is likely excessive, even with a non-syn ATF.
Your new transmission almost certainly has the improved planetaries. However, you got burned with that original transmission, so it is understandable that you want to use whatever you consider the best ATF, and change it every 15,000 miles. While I agree with the above post that it's oftener than likely needed, you are doing exactly what I'd do in the 15,000 mile changes, if I'd had the earlier transmission failure. Although I use Mobil 1 in my vehicles requiring Dexron III, you have chosen wisely in the synthetic you've chosen, in my opinion.
