Copperhead
Veteran Member
Have primarily used Schaeffer 700 15w40 syn blend in this pre-egr, factory rebuilt Detroit 60 12.7L. Thru the prodding of my Schaeffer rep, I decided to try the 711 10w30 syn blend. Was a little leery with the engine getting close to 500K miles on it. But, I gave it a shot. Not too bad of results. Numbers as good or better to the previous 15w40 numbers on multiple samples, except, this one shows the 711 has some pretty good levels of Zinc, Phos, Calcium, etc. More than their 15w40, enough to make a racing engine builder drool, and I didn't lose nearly as much TBN. A very stout oil. Used the same amount of oil, about 2 qts over the 20K miles. Sump capacity 9.5 gallons.
Any doubts that a 10w30 HDEO can't do as well as a 15w40 were totally blown out of the water. This is a factory remanned pre-EGR Detroit 60 that has almost 500,000 miles on it after the rebuild. It has to move up to 80K lb of truck and freight. One of the best oil samples I have seen in a long time. Engine runs a tad smoother, starts easier, and even does slightly better on fuel economy.
Miles on Motor 493387 Miles on oil 20100
Iron 28
Chromium 2
Lead 6
Copper 1
Tin 0
Aluminum 1
Nickel 0
Silver 0
Titanium 1
Vanadium 1
Silicon 3
Boron 1
Sodium 22
Potassium 2
Magnesium 985
Calcium 1494
Phosphorus 1276
Zinc 1573
Moly 68
Barium 0
Vis @ 100c 11.53
TBN 8.14
Oxidation 16
Nitration 8
Soot 1.6
Any doubts that a 10w30 HDEO can't do as well as a 15w40 were totally blown out of the water. This is a factory remanned pre-EGR Detroit 60 that has almost 500,000 miles on it after the rebuild. It has to move up to 80K lb of truck and freight. One of the best oil samples I have seen in a long time. Engine runs a tad smoother, starts easier, and even does slightly better on fuel economy.
Miles on Motor 493387 Miles on oil 20100
Iron 28
Chromium 2
Lead 6
Copper 1
Tin 0
Aluminum 1
Nickel 0
Silver 0
Titanium 1
Vanadium 1
Silicon 3
Boron 1
Sodium 22
Potassium 2
Magnesium 985
Calcium 1494
Phosphorus 1276
Zinc 1573
Moly 68
Barium 0
Vis @ 100c 11.53
TBN 8.14
Oxidation 16
Nitration 8
Soot 1.6