Miles on oil 5,042
Miles on unit 162,690
Aluminum 4
Chromium 1
Iron 19
copper 2
lead 12
Tin 1
Moly 73
Nickel 1
Manganese 0
silver 0
Titanium 0
Potassium 7
Boron 348
Silicon 7
Sodium 5
calcium 1845
Magnesium 304
Phosphorus 1164
Zinc 1279
Barium 0
SUS viscosity@210F 72.9
cSt Viscosity@100C 13.71
Flashpoint in F 410
Fuel% 0.5
Antifreeze% 0.0
Water% 0.0
Insolubles% 0.3
TBN 5.2
Comments: We found high lead in this sample from your 7.3 PSD. Lead shows bearing wear and this level is something to watch. The other wear metals look good, so we're not sure why the bearings are wearing like this. Universal averages show typical wear levels for this type of engine after about 5,400 miles on the oil. If the engine sees any hard use or alot of idling, that might explain the wear. The 0.5% fuel isn't hurting anything. The TBN was 5.2 showing lots of active additive left; less than 1.0 is too low. Watch your oil pressure and try just 4,000 miles on the oil.
This is my first UOA on the truck, so I don't have anything to compare it to. I've read in other threads that fuel additives or running biodiesel can show high lead numbers. I have run different fuel additevs includint TCW3 as well as a full tank of B100. Any opinions are appreciated.
Miles on unit 162,690
Aluminum 4
Chromium 1
Iron 19
copper 2
lead 12
Tin 1
Moly 73
Nickel 1
Manganese 0
silver 0
Titanium 0
Potassium 7
Boron 348
Silicon 7
Sodium 5
calcium 1845
Magnesium 304
Phosphorus 1164
Zinc 1279
Barium 0
SUS viscosity@210F 72.9
cSt Viscosity@100C 13.71
Flashpoint in F 410
Fuel% 0.5
Antifreeze% 0.0
Water% 0.0
Insolubles% 0.3
TBN 5.2
Comments: We found high lead in this sample from your 7.3 PSD. Lead shows bearing wear and this level is something to watch. The other wear metals look good, so we're not sure why the bearings are wearing like this. Universal averages show typical wear levels for this type of engine after about 5,400 miles on the oil. If the engine sees any hard use or alot of idling, that might explain the wear. The 0.5% fuel isn't hurting anything. The TBN was 5.2 showing lots of active additive left; less than 1.0 is too low. Watch your oil pressure and try just 4,000 miles on the oil.
This is my first UOA on the truck, so I don't have anything to compare it to. I've read in other threads that fuel additives or running biodiesel can show high lead numbers. I have run different fuel additevs includint TCW3 as well as a full tank of B100. Any opinions are appreciated.
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