Fourth UOA on G-Oil from my 2002 Passat 1.8T. Driving is mostly short trips with occasional 15-50 mile weekly jaunts. All four samples were taken from drain plug on the sump and less than 1qt was drained in total each time, sump capacity is 4qts so that amounts to 25% replacement each sample. See the end for adjusted quantities of wear metals that take this into account. Topup oil was 3qt RotellaT 15-40 after the third one - no doubt many of you will note the effect on additives, TBN, and visc!
Code:
miles 5500 3500 1500 50
ALUMINUM 4 4 2 1
CHROMIUM 0 0 0 0
IRON 8 4 3 1
COPPER 7 5 4 2
LEAD 0 0 0 0
TIN 0 0 0 0
MOLY 58 63 62 61
NICKEL 0 1 1 0
SILVER 0 0 0 0
TITANIU 0 0 0 0
POTASSI 4 8 0 0
BORON 78 118 126 155
SILICON 64 54 29 10
SODIUM 3 0 0 0
CALCIUM 1910 1740 1823 1729
MAGNESI 87 122 158 116
PHOSPHO 771 716 718 644
ZINC 824 709 741 759
BARIUM 0 0 0 0
V210°F unkown unkown 55.3 57.8
V100°C 9.5 8.6 8.86 9.6
Flash unkown unkown 360 415
Fuel%
Antifrz 0 0 0 0
Water % unkown unkown 0 0
Insol 0.1
TBN 2.9 2.1 5.6
If you adjust the wear metals to account for 25% reduction every sample you get Aluminum/Iron/Copper of 5/9/8.
Code:
miles 5500 3500 1500 50
ALUMINUM 4 4 2 1
CHROMIUM 0 0 0 0
IRON 8 4 3 1
COPPER 7 5 4 2
LEAD 0 0 0 0
TIN 0 0 0 0
MOLY 58 63 62 61
NICKEL 0 1 1 0
SILVER 0 0 0 0
TITANIU 0 0 0 0
POTASSI 4 8 0 0
BORON 78 118 126 155
SILICON 64 54 29 10
SODIUM 3 0 0 0
CALCIUM 1910 1740 1823 1729
MAGNESI 87 122 158 116
PHOSPHO 771 716 718 644
ZINC 824 709 741 759
BARIUM 0 0 0 0
V210°F unkown unkown 55.3 57.8
V100°C 9.5 8.6 8.86 9.6
Flash unkown unkown 360 415
Fuel%
Antifrz 0 0 0 0
Water % unkown unkown 0 0
Insol 0.1
TBN 2.9 2.1 5.6
If you adjust the wear metals to account for 25% reduction every sample you get Aluminum/Iron/Copper of 5/9/8.