94 Camaro, 3.4 V6, Rotella Syn 5W40, 174,000 mi., 3600 OCI

[dkcase]

94 Camaro 3.4L V6
SAMPLE DATE 06/04/05
174,000 Miles

08/03 6000 miles, 154,300... 06/04, 6600mi, 165,000 ... This Sample 3646mi., 174,000

ALUMINUM 2 ... 3 ... 6
CHROMIUM 1 ... 1 ... 1
IRON 10 ... 27 ... 38
COPPER 4 ... 4 ,... 8
LEAD 1 ... 3 ... 3
TIN 0 ... 1 ... 1
MOLYBDENUM 2 ... 5 ... 5
NICKEL 0 ... 0 ... 1
MANGANESE 0 ... 0 ... 0
SILVER 0 ... 0 ... 0
TITANIUM 0 ... 0 ... 0
POTASSIUM 0 ... 0 ... 9
BORON 0 ... 0 .... 5
SILICON 19 ... 14 ... 11
SODIUM 4 ... 4... 8
CALCIUM 3156 ... 3504 ... 3089
MAGNESIUM 11 ... 14 ... 17
PHOSPHORUS 924 ... 932 ... 1082
ZINC 1192 ... 1218 ... 1349
BARIUM 0 ... 0 ... 1

MI/HR ON OIL 3646

MI/HR ON UNIT 174,000

Higher Aluminum, Iron , Copper.
Sodium and Potassium up. No Potassium before.

This report by Butler, 1st two by Blackstone.

 

[Drew99GT]

The GM coolent monster may be slowly knawing at your motor

 

[Bror Jace]

Yes, I'd agree with Drew99GT. The increased wear looks suspiciously glycol-related ... especially with that sudden potassium of 9ppm.

--- Bror Jace

 

[TooSlick]

What were the numbers for Viscosity @ 100C, along with oxidation, sulphation and nitration?

How about the # of fuel in the sample?

Tooslick

 

[dkcase]

quote:

---

Originally posted by TooSlick:
What were the numbers for Viscosity @ 100C, along with oxidation, sulphation and nitration?

How about the # of fuel in the sample?

Tooslick

---

Viscosity = 15.0 at 100C

Fuel, Antifreeze, Water, all NEG

oxidation, sulphation and nitration: Not Reported

Thanks for commenting...

 

[TooSlick]

Are all three sets of data from the Rotella 5w-40? It looks as though they are....

The Cu and Pb levels are directionally increasing. Combine this with the trace of Na and K - coolant adds - and you have the characteristic "signature" of EG contamination and chemical(bearing) wear.

A simple blotter test with some high quality, chromatography paper would be useful...