Napa 15w40 + 1/3 bottle Molyslip / Mrmoly ~5500mi / 1995 Subaru

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The latest sample is on the top most row. The bottom rows, if I remember correctly, refer to the same batch of oil (kendall 10w30+M1 15w50+ makeup oil) taken some thousands of miles apart.

The recent reading refers to summer oil, 3 liters Napa 15w40 + 1 liter M1 15w50 + ~1/3 bottle of molyslip, which seemed to add perhaps 120 to 160 ppm of Moly. (The uncertainty because we don't have any data on Napa 15w40. Yet some suggest Napa 15w40 is Valvoline 15w40 which has a good dose of moly in it ~60 ppm) Lot's of freeway driving, hence no fuel dilution like some of the winter readings on the earlier batch.

Sample #1, like sample #3 was drawn from the oil filter, while #2 was taken from the drain hole of the pan (#2 was either a bad reading or I ended up with some iron sediments).

Also, I would guestimate the new Molyslip to add about 450 ppm of moly if diluted in 4 liters of oil.

Sample #1 and #3 suggest the oils are doing a wonderful job, assuming that it is meaningful to draw the sample from the oil filter. I assume that when I draw the oil from the filter that some of it comes from the filtered half, and some from the unfiltered part. One question remaining is how much of the wear particles end up trapped in the filter. Can anybody guess how big the typical wear particle is?

code:

Sample ID Date Sampled Date Received Time/Miles on Oil Component Hours/Miles Fluid Brand Fluid Grade Condition

9922101-R-1350 11/18/2004 11/18/2004 5500 122600 NAPA NORMAL

34502191-813 06/09/2004 06/16/2004 4850 117400 KENDALL NORMAL

34502191-387 02/05/2004 02/05/2004 1500 114000 KENDALL NORMAL


code:

Sample ID FE CR PB CU SN AL NI AG MN SI B NA MG CA BA P ZN MO TI V K

9922101-R-1350 2 0 0 6 0 1 6 8 182 0

34502191-813 28 0 1 8 0 0 0 0 181 0

34502191-387 0 0 1 4 0 1 5 11 204 0


code:

Sample ID visc40

cSt visc100

cSt water

% SOOt

fuel

% glycol

9922101-R-1350 14.5 0 1 0 0

34502191-813 13.1 0.1 2 1 0

34502191-387 11.8 0.2 0 3.5 0


 
If you are talking about the NAPA 15w40
in the blue bottle I just went to NAPAonline.com
and pulled it up (search keyword "motor oil").
Click on the MSDS for the NAPA 15w40 and you
get a Valvoline MSDS which says it is for
"ALL FLEET PLUS MOTOR OIL SAE 15W40." So your
NAPA 15w40 looks like it could be HDMO Valvoline.
However, bear in mind the MSDS's are written
broadly enough that two similar, but different
oils could use the same MSDS. Also can call
Valvoline to get tech data on the NAPA oils.
 
Yes, Napa 15w40 is probably Valvoline. And I was wrong about the 60ppm guess, which is (at least, used to be) the average for the upper end brands. The 15w40 Valv. might be the only Valv oil with any moly in it, and they put a good dose of it. If you search the VOA's I think it was around 90-100 ppm's measured. It's also the clear version of moly, moly carbomate (or whatever the chemical name is) rather than the suspended MoS2. This version of Moly seems to get along super with the MoS2.

Given higher ppm figure for the Valv 15w40 this puts my guestimate of a whole bottle of Molyslip as adding 400 ppms.

Interestingly, if the oil filter sampling method has any validity at all, then the latest reading backs up (or at least may be consistent with) my opinion that MoS2, Mo carbomate, and Boron work quite well with another.

I also have some other suspicions and opinions: MoS2 should be avoided in wetter and colder climates (doesn't mix oil with water contamination).

This is my last reading that I'll do, since I went through my 3-pack of oil samples, found out that my car seems to have no major issues such as gasket leaks, and had some fun while doing this.

I hope you other folks will continue to do some interesting stuff. My wish list: more moly stuff, and I also want to know how much zinc those cheap additives like stp add.

Also, I'd like to see some more Valv. / Napa 15w40 UOA's as this weight seems to be outstanding, and is the only commonly available product with >> 60 ppms of Mo.
 
quote:

The new Maxlife SM tech sheets list 300 ppm moly!

cheers.gif


I think we have a winner!!

I'll be using that, or some mix of that (instead of the m1) and the napa 15w40.
 
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