98 12-valve Cummins Ram, Valvoline Premium Blue @ 5000 miles

[JohnStra]

I'm pretty happy with these numbers. I attribute the high TBN to the LC20. Only concern is the silicon. I did some work on the engine that involved R&R of the gear housing and I used silicone gasket maker during reassembly. I suspect either the gasket maker or the LC20 is causing the elevated silicon level since my bypass is very effective.

Comments?

1998 Cummins 6 BT 5.9 Liter (12 Valve)

Analyzed By: Blackstone Labs
Oil Service Miles: 5000
Total Vehicle Miles: 155418
Make up Quarts: 1.5
Oil Brand: Valvoline Premium Blue
Grade: 15W-40

Bypass Filter: Gulfcoast O-1
Additives: Lube Control LC20 @ 3oz / 1000 miles

TBN: 12.5

Aluminum: 3
Chromium: 1
Iron: 3
Copper: 1
Lead: 1
Tin: 2
Molybdenum: 76
Nickel: 0
Manganese: 0
Silber: 0
Titanium: 0
Potassium: 2
Boron: 96
Silicon: 26
Sodium: 0
Calcium: 3013
Magnesium: 10
Phosphorus: 1096
Zinc 1290:
Barium 0:

Sus Viscosity @ 210*F 70.7
Flashpoint 430
Fuel % Antifreeze % 0.0
Water % 0.0
Insolubles % 0.3

 

[wwillson]

JohnStra,

This is an outstanding report! I just hope you didn't throw this oil away? We routinely run dino 15w-40 15,000 without a bypass or anything special in the 5.9L and get good reports.

Wayne

 

[elric]

what a great uoa!! would this be attributed to the oil, bypass filter, lc20 or combination of the three? would love to hear from some of the experts.

 

[JohnStra]

I'm still running with the same oil. I was hoping for 10k. If I can get 15k or more out of it I will. Only problem is I bought a case of Schaeffer 9000 for winter and now it looks like I'll just have to hold on to it

The truck had 148k miles on it when I bought it in July. I ran 2 ARX cleaning cycles before putting in the Premium Blue.

I'm inclined to attribute the good #s to both the bypass and the lc20. W/ a 12.5 TBN of 5000 miles, the lc is apparently maintaining very robust detergency levels in the oil and I think the bypass is helping keep insolubles low. An additional data point... I'm using LubeControl's fp60 in my fuel and I believe that is helping with soot control.

Thanks for the feedback!

-john