Valvoline Prem. Blue 15W-40/ 9,200 mi/ '03 Duramax

[johnnyo4]

5000 miles of the 9200 was towing a 10K 5th wheel
SAMPLE DATE 11/7/2004
MI/HR ON UNIT 35,119
MI/HR ON OIL 9,200
IRON 27
COPPER 5
LEAD 9
TIN 2
MOLYBDENUM 80
NICKEL 1
MANGANESE 1
SILVER 0
TITANIUM 0
POTASSIUM 0
BORON 117
SILICON 13
SODIUM 3
CALCIUM 3891
MAGNESIUM 7
PHOSPHORUS 1129
ZINC 1288
BARIUM 0
TBN 10
Insolubles 0.3
Fuel <.5

 

[Steve S]

HDEO'S get the job done .

 

[SSDude]

This is a good oil that does not get a lot of attention on this board. There is still a lot of life left in this oil. This oil is considered to be energy conserving. I believe that it is because of the boron in the oil. I am going to be using this oil in my car for an Auto-Rx wash and rinse in a few months.

 

[johnnyo4]

Yes this oil does not get much attention. mikeyoilnutt's VOA on this is what caught my eye and got me to try it. My UOA sure looks like this oil holds up good during use. I like the additive package.

My observation. This oil really cleans the engine. It gets dirty fast and seems to hold the dirt in suspension. I noticed the the dip stick had a yellowish oil tint to it before I used it. It's now a nice clean silver like when it was new. I only had to add a 1/2 qt @ 7000 miles. Whereas with Delo and Rotella I burn a qt by 7000 miles in my truck.

I am running Rotella syn 5W-40 right now for the winter months.

 

[SSDude]

I'm glad that I purchased this oil. My $5 rebate check arrived today.