dnewton3
Staff member
(posting for bambam)
2007 "Classic" style GM truck with Dmax
95k miles on truck; no make up oil; OCId at UOA
Code:
UOA Avg
7.5k 6.9k
Al 1 2
Cr 0 0
Fe 6 14
Cu 2 14
Pb 4 2
Tn 0 1
Moly 10 37
Ni 0 0
Manga 0 0
Silv 0 0
Ti 3 0
Potas 1 4
Boron 22 102
Si 5 10
Sodium 0 4
Calci 2530 2107
Magne 144 411
Phos 1149 1087
Zn 1300 1269
Bar 0 0
SUS 64.5 59-65
cSt 11.46 9.9-11.9
FP 450 >400
Fuel
Antifrz 0 0
Water 0 0
Insol .1 .6
TBN 5.2 >1.0
Blackstone comments:
The column on the far right shows typical wear for a Duramax engine after about 6,900 miles. You ran longer and after 7,500 miles, your wear metals read much lower than average. That's a good sign that mechanical parts that share the oil are doing well and aren't experiencing any issues. If they are, we certainly can't see signs of poor wear in this sample of used oil. The viscosity was in the 10W/30 grade oil range and no harmful contamination like fuel, coolant, or moisture was found. The TBN was strong at 5.2 (1.0 is low), so try 9,500 miles and check back.
2007 "Classic" style GM truck with Dmax
95k miles on truck; no make up oil; OCId at UOA
Code:
UOA Avg
7.5k 6.9k
Al 1 2
Cr 0 0
Fe 6 14
Cu 2 14
Pb 4 2
Tn 0 1
Moly 10 37
Ni 0 0
Manga 0 0
Silv 0 0
Ti 3 0
Potas 1 4
Boron 22 102
Si 5 10
Sodium 0 4
Calci 2530 2107
Magne 144 411
Phos 1149 1087
Zn 1300 1269
Bar 0 0
SUS 64.5 59-65
cSt 11.46 9.9-11.9
FP 450 >400
Fuel
Antifrz 0 0
Water 0 0
Insol .1 .6
TBN 5.2 >1.0
Blackstone comments:
The column on the far right shows typical wear for a Duramax engine after about 6,900 miles. You ran longer and after 7,500 miles, your wear metals read much lower than average. That's a good sign that mechanical parts that share the oil are doing well and aren't experiencing any issues. If they are, we certainly can't see signs of poor wear in this sample of used oil. The viscosity was in the 10W/30 grade oil range and no harmful contamination like fuel, coolant, or moisture was found. The TBN was strong at 5.2 (1.0 is low), so try 9,500 miles and check back.
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