Toyota Diesel, 5k on M1TDT.. Lead 48?

[bloc]

Hi All,

Just got another UOA back from my recent Diesel swap into a Toyota 4runner. For the record this is a Toyota built turbodiesel engine called the 1KZ-TE.

Oil is M1 TDT, with approx 5k miles on it. The previous oil fill of TDT had a viscosity of 17.1 at 1500 miles, so I dumped it and refilled. Filter was not changed at that time.

This UOA comes back with a couple things I'm not happy with. One I can explain, the other I'm curious about.. so if you have any advice, please post.

Iron 13 (cam isn't in perfect shape, will be replacing soon)
Chrome 0
Nickel 0
Alum 2
Copper 0
Lead 48? This is the one I don't know about
Tin 0
Cadmium 0
Titanium 0
Vanadium 0
Silicon 9
Sodium 12
Potassium 1
Moly 10
Anti 0
Mang 0
Li 0
Boron 63
Mang 761
Ca 1516
Barium 0
Phos 1157
Zinc 1332
Fuel Soot 0.2%
Water 100°C Vis 14.1
TBN 7.93

I've been using PowerService Diesel Kleen and DFS throughout this oil's life.. do they add lead for any reason? Other than that I can't explain the lead.. I'll be double checking oil pressure soon just out of curiosity.

Thanks in advance,

Justin

 

[peterdaniel]

I wonder if the Diesel Kleen is a like a lead additive... Is Diesel fuel "unleaded"?

 

[wjdell]

doubtful disel kleen has this lead - if it not wear it seems that something is eating at the lead. change it and test again in 5k

 

[bloc]

would the lack of other wear metals suggest it isnt wear? or is the lead and iron enough?

 

[bloc]

So I have an update on this case. 5k miles on 7 quarts of Mobil1 TDT (CJ4)

Fe 10 (from 13)
Al 1 (from 2)
Pb 25 (from 48, still flagged though)
all other "wear" metals 0

Si 12 (from 9)
Na 2 (from 12)
K 0

fuel Soot .2%
water Vis 13.8
TBN 6.00

Overall I'm much happier than I was last change. I plan to go another 5k on a fresh fill of TDT and retest.. then make the determination of what to put into it. I don't like paying that much for oil that will only support 5k miles and think it may be more cost effective to go with a conventional oil.

Opinions, anyone?

For the additive freaks:
Mo 3
B 58
Mg 914
Ca 1400
P 1113
Zn 1387