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#1260241 - 10/18/08 02:04 PM Toyota Diesel, followup UOA, M1 TDT 5w-40
bloc Offline

Registered: 10/17/08
Posts: 11
Loc: Houston, Tx
Hello all, new to the forum, so let me know if I'm messing something up.

Background: I imported a used Japanese market 1KZ-TE toyota turbodiesel engine to install into a 4runner. Approx 80k miles on the clock. I pulled a sample of the oil that came in the engine, and sent it to Polaris for a UOA, just to see what I was dealing with. i had no idea of the time on the oil, what type, etc. It came back looking like a good oil, however polaris flagged the potassium saying it could point to coolant in the oil. The relevant numbers were Si 22 - Na 54 - K 45, the silicon may have been high due to the very dirty air filter that came with the engine.

I filled with regular pennzoil 5w-30 and ran it for about 10 minutes idling just to flush the K out, then drained and let it sit for about a month letting gravity get everything it could out, and filled with Mobil1 5w-40 Turbo Diesel Truck.

I got the engine installed, and a sample was pulled at ~1500 miles. For the record, I had the valve cover off just before pulling this sample, and approx 1000 of those miles were using the mentioned dirty air filter, while I waited on a replacement to come from Japan. This may explain the Si of 26. I'm not yet worried about that number, as I plan to refill with TDT before a roadtrip coming up soon.

The latest results were as follows:
Iron 6
Chromium 0
Nickel 0
Aluminum 1
Copper 0
Lead 3
Tin 0
Cadmium 0
Silver 0
Titanium 0
Silicon 26
Sodium 1
Potassium 1
Moly 5
Antimony 0
Mang 0
Lithium 0
Boron 58
magnesium 532
Calcium 2501
Barium 0
Phos 1222
Zinc 1504
Fuel <.5%
Soot <.1%
Water <.1
Vis @ 100C 17.1cs (?)
TBN 10.9

K seems in line, though those 1500 miles were using a coolant pretty low on Antifreeze while I waited on my final cooling hose config to show up from Japan. it has since been brought up to spec (full bottle of a/f + DI water) so I'll keep an eye on that in the future.. but what worries me is the viscosity. Polaris flagged that as being too high, and I have to wonder, after only 1500 miles what would make Delvac thicken up like that?

Thanks for any thoughts or advice,


#1261134 - 10/19/08 07:37 PM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: bloc]
Cujet Offline

Registered: 02/15/03
Posts: 5198
Loc: Jupiter, Florida
Not to worry. It looks great. My first guess is that the viscosity is not that far out of spec and may be simply a lab error. TDT is on the thick side when I test samples from my Jetta. So far, I have no cam problems, quite unlike some others.
Turbo's rule.

#1264078 - 10/23/08 04:24 AM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: Cujet]
Shaman Offline

Registered: 07/27/04
Posts: 2325
Loc: Frankfort, Kentucky
Interested to know how the 1KZ is working out for you

#1266521 - 10/26/08 01:29 AM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: Shaman]
bloc Offline

Registered: 10/17/08
Posts: 11
Loc: Houston, Tx
It is a great engine, but it's begging for a different transmission. I bought it with the A343F automatic, and went ahead and installed it that way, mainly to cut down on initial work, and see if I could stand it. Well, I can't. I've got an R151F manual sitting on the floor of my garage, and am about to start collecting the bellhousing and other parts I need to install that.

Otherwise, good power, good economy so far, etc. Very happy to have this engine installed and running. Once I get the intercooler setup I'm looking for ~30mpg... that'll be the icing on the cake.

You guys get some great engines over there..

#1269621 - 10/29/08 08:10 PM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: bloc]
genynnc Offline

Registered: 10/13/08
Posts: 382
Loc: OR
[censored], sorry I'm a Zinc and Phosphorous whore, is that CJ-4 M1 TDT? I am crossing my fingers and hoping so...
03 Dodge Ram 1500 5.7= Kendal GT1 5w30, 55 Chevrolet 327/ Muncie= Valvoline VR1 10w30, 67 Chevelle Malibu 283= Quaker State Defy 5w-30

#1270858 - 10/31/08 11:55 AM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: genynnc]
bloc Offline

Registered: 10/17/08
Posts: 11
Loc: Houston, Tx
Sorry, but I'm not 100% certain.

I do remember doing an oil change in my TDI just before when I filled up the Toyota, and that was CJ-4. We have a lot of powerstroke/cummins/duramax owners around here and I'd say we moved through the CI-4/4+ stuff pretty quickly. If I had to guess I'd say CJ-4, but nothing concrete.

#1273832 - 11/03/08 11:20 PM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: bloc]
wjdell Offline

Registered: 02/03/07
Posts: 145
Loc: Florida
The UOA numbers above seem to represent CI4+ - CJ4 will have less Ca -P -Zn

#1335543 - 01/08/09 06:38 PM Re: Toyota Diesel, followup UOA, M1 TDT 5w-40 [Re: wjdell]
VW_TDI_PD Offline

Registered: 02/09/07
Posts: 142
Loc: Chicago, IL
CJ4 TDT - the cats meow!