Here is my latest UOA on my expedition. There was some concerns last time about possible coolant intrusion in the oil based off the sodium, viscosity, and high TBN. It appears that the issue either fixed itself, or as suspected by some last time, the samples got switched.
this time when i sent it in, i put my unit number on the bottle and cap, so if there was any questions i could call the lab and have them look for the bottle with my number on it.
All in all, wear metals are consistent with previous samples. 10,000 on the amsoil XL looks to be a cake-walk. Make up oil in the 10,000 run was about 2 quarts adding about a 1/2 quart every 2,000 miles. it appears that is a good protocol to follow based on the relatively high TBN at the end of the run. That is to say, i didn't add a full quart of oil at the end of the run that would artificially boost the TBN.
This would have been a summer OCI with lots of towing and lots of long interstate runs, with the usual 30 mile drive to work and back.
I'm not sure if i'm going to continue with the Amsoil XL or not. I'm leaning toward going back to Castrol Edge in the Gold Bottle, or Castrol Edge High-mileage. it looks like dollar for dollar, it is a better bargain. the Amsoil holds the TBN a bit better, but the wear numbers for the Castrol products look to be lower across the board. The viscosity appears to end up the same regardless of what i use, so i'm thinking it is going to be the Castrol oil that i can easily get at walmart for ~$5/quart in the big jugs rather than the ~$7/quart Amsoil.
every time i change the oil on this truck i think it is going to be the last one. Despite what the wear numbers might lead you to believe, it runs as good as it did at 104,000 miles when i bought it. It looks like i'll be making medial payments for the next 11 months, so i'll have to keep it that long. Nothing in the UOA's leads me to think that the engine will give out. something else, perhaps, but nothing in the engine.
discussions, thoughts, and opinions welcomed and wanted!
Code
OIL Amsoil Amsoil Castrol 5w30 Mobil 1 Castrol 5w30 Castrol 5w30
XL 5w30 XL 5w30 Edge 5w30 Edge Edge
New Formula New Formula High Mileage Gold Bottle Gold Bottle
MILES IN USE 10,029 9,962 9,787 6,856 9,060 9,980
MILES 210,032 200,003 190,041 172,300 158,145 149,085
SAMPLE TAKEN 12/19/18 5/15/18 11/8/17 02/18/17 06/16/16 01/14/16
Metals (ppm)
IRON 94 14 51 110 71 88
CHROMIUM 2 1
LEAD
COPPER 3 7 2 3 3 4
TIN 3
ALUMINUM 18
NICKEL
SILVER
TITANIUM
VANADIUM
Contaminants (ppm)
SILICON 14 12 12 15 11 12
SODIUM 6 103 15 34 24 18
POTASSIUM 2
Additives (ppm)
MAGNESIUM 1253 486 85 1048 154 278
CALCIUM 1339 1229 2202 1375 1770 1990
BARIUM
PHOSPHORUS 661 864 648 900 637 648
ZINC 756 1035 796 970 667 755
MOLYBDENUM 71 38 79 95 66 69
BORON 37 112 52 200 62 58
Contaminants
WATER (%)
Coolant No No No No No No
Physical Tests
Visc (cSt 100C) 9.2 17.9 10.3 9.0 9.0 8.9
TBN (mgKOH/g) 2.4 7.3 1.2 3.0 1.4 2.4
this time when i sent it in, i put my unit number on the bottle and cap, so if there was any questions i could call the lab and have them look for the bottle with my number on it.
All in all, wear metals are consistent with previous samples. 10,000 on the amsoil XL looks to be a cake-walk. Make up oil in the 10,000 run was about 2 quarts adding about a 1/2 quart every 2,000 miles. it appears that is a good protocol to follow based on the relatively high TBN at the end of the run. That is to say, i didn't add a full quart of oil at the end of the run that would artificially boost the TBN.
This would have been a summer OCI with lots of towing and lots of long interstate runs, with the usual 30 mile drive to work and back.
I'm not sure if i'm going to continue with the Amsoil XL or not. I'm leaning toward going back to Castrol Edge in the Gold Bottle, or Castrol Edge High-mileage. it looks like dollar for dollar, it is a better bargain. the Amsoil holds the TBN a bit better, but the wear numbers for the Castrol products look to be lower across the board. The viscosity appears to end up the same regardless of what i use, so i'm thinking it is going to be the Castrol oil that i can easily get at walmart for ~$5/quart in the big jugs rather than the ~$7/quart Amsoil.
every time i change the oil on this truck i think it is going to be the last one. Despite what the wear numbers might lead you to believe, it runs as good as it did at 104,000 miles when i bought it. It looks like i'll be making medial payments for the next 11 months, so i'll have to keep it that long. Nothing in the UOA's leads me to think that the engine will give out. something else, perhaps, but nothing in the engine.
discussions, thoughts, and opinions welcomed and wanted!
Code
OIL Amsoil Amsoil Castrol 5w30 Mobil 1 Castrol 5w30 Castrol 5w30
XL 5w30 XL 5w30 Edge 5w30 Edge Edge
New Formula New Formula High Mileage Gold Bottle Gold Bottle
MILES IN USE 10,029 9,962 9,787 6,856 9,060 9,980
MILES 210,032 200,003 190,041 172,300 158,145 149,085
SAMPLE TAKEN 12/19/18 5/15/18 11/8/17 02/18/17 06/16/16 01/14/16
Metals (ppm)
IRON 94 14 51 110 71 88
CHROMIUM 2 1
LEAD
COPPER 3 7 2 3 3 4
TIN 3
ALUMINUM 18
NICKEL
SILVER
TITANIUM
VANADIUM
Contaminants (ppm)
SILICON 14 12 12 15 11 12
SODIUM 6 103 15 34 24 18
POTASSIUM 2
Additives (ppm)
MAGNESIUM 1253 486 85 1048 154 278
CALCIUM 1339 1229 2202 1375 1770 1990
BARIUM
PHOSPHORUS 661 864 648 900 637 648
ZINC 756 1035 796 970 667 755
MOLYBDENUM 71 38 79 95 66 69
BORON 37 112 52 200 62 58
Contaminants
WATER (%)
Coolant No No No No No No
Physical Tests
Visc (cSt 100C) 9.2 17.9 10.3 9.0 9.0 8.9
TBN (mgKOH/g) 2.4 7.3 1.2 3.0 1.4 2.4