INDYMAC

Still waiting on my reference sample test results. The lab said the TAN came in too high, so they were re-running the test. Maybe the reddish purple dye makes this test difficult.

INDYMAC

OK, I think we have a winner. Of the five samples I sent to the Houston lab last week, this one appears to be the only report with no obvious errors. I must have gotten the rookie Tech on the others! The first sample line is the reference sample of 1605, and the second sample line is the used oil:


[attachment=25709:LE 1605 S2000 65K.pdf]

INDYMAC

Here is my most recent Polaris UOA of 1605 in the S2000. 6/21/2014 sample after almost 2 years and 7,146 miles/72,406 total. Reference oil is 2nd number:

Iron 17/1
Chromium 0/0
Nickel 1/0
Aluminum 0/0
Copper 0/0
Lead 0/0
Tin 3/0
Cadmium 0/0
Silver 0/0
Vanadium 0/0
Silicon 3/0
Sodium 1/0
Potassium 0/0
Titanium 0/0
Molybdenum 0/3
Antimony 1/0
Manganese 0/0
Lithium 0/1
Boron 38/88
Magnesium 3/0
Calcium 6/6
Barium 0/0
Phosphorus 1060/1154
Zinc 6/4
Water <0.1%
V100C 20.1 cSt/V40C 222 cSt
TAN 2.26/1.78

zeroptzero

^ Good lord, your diff is experiencing almost no wear Jack. 16 ppm of iron (17-1) in 7,100 miles is crazy low. Those are amazing numbers.

LE1605 continues to impress me beyond anything I would have expected. Amazing report

sillyboybmxer

yup, 16ppm iron is pretty average and here mine is showing 700ppm. This next one with a track day is gonna be interesting

INDYMAC

700 ppm with 1605? How many miles?

sillyboybmxer

it was actually 666ppm with 4300 miles.
You saw it already.....in this thread
https://www.s2ki.com/s2000/topic/107...iff-and-trans/

i actually feel better now, I was thinking less than 20ppm iron was average but its actually 388ppm so I feel better about mine now, and am jealous of your 16ppm.

INDYMAC

I do remember it now. Try to stay the course and keep us posted on how the wear trend is going. Was this the OEM LSD? Mine shed some nickel and iron for awhile too. Titanium? I don't think so, but I'll check.

Good luck!

sillyboybmxer

Ill be sending another sample soon as I have a few thousand miles and 4 20min sessions on track along with about 50 autox runs . Oem diff