Once again, a high percentage of fuel in the oil. This inverval was done during the winter with temps sometimes hitting -25 Deg Celsius overnight. I plugged in the truck whenever I could although sometimes at work that was not an option. The only change in my driving habits was that the truck is now my full time vehicle while my S2000 is in storage, thus I take it to the store, etc. On my previous interval with the Castrol RX my turbo vanes were malfunctioning and the whole turbo was replaced which might explain the relative poor performance of the oil and the increase in iron.code:
Esso XD-3 0w30/Castrol RX 15w40/Mobil Delvac 15w40/Esso XD-3 0w40
Total KM's 37100k 28400k 22000k 14000k
Time on Fluid 8700k 6400k 8000k 8000k
Time on Filter 8700k 6400k 8000k 8000k
Fluid Maint Changed Changed Changed Changed
Filter Maint Changed Changed Changed Changed
Iron (Fe) 33 50 39 45
Lead (Pb) 0.8 0.3 0.7 1.2
Silicon (Si) 16 20 31 64
Copper (Cu) 2.9 3.6 6 10
Chromium (Cr) 1.3 2 1.2 1.1
Nickel (Ni) 0 0 0 0
Titanium (Ti) 0.1 0.2 0 0
Silver (Ag) 0.3 0.4 0.4 0.4
Aluminum (Al) 3.2 6.3 4.3 1.3
Tin (Sn) 0.5 0.2 0.9 1.3
Sodium (Na) 1.8 3.1 0.8 3.4
Potassium (K) 2.3 5.5 4.1 12
Boron (B) 4.3 7 24 3.6
Barium (Ba) 0.2 0.6 0.3 0.7
Molybdenum (Mo) 3.2 7.2 27 0.6
Magnesium (Mg) 27 84 315 9
Calcium (Ca) 3003 2819 2534 2938
Phosphorus (P) 1026 1151 1099 1005
Zinc (Zn) 1213 1277 1277 1192
Sulfur (S) 3556 4387 3313 3143
Manganese (Mn) 0.6 0.8 0.8 1
Vanadium (V) 0 0.1 0 0
Fuel(%) 4 3 4 3
Glycol NEG NEG NEG NEG
Soot(%) 0 0 0 0 0
Oxid(PA) 63 163 63 63
Nitr(PA) 73 195 73 64
Sulf(PA) 56 191 56 56
ZDDP 18 18 17
TBN 7.42 7.31 8.1 8.06
Kv@100°C 10 11.1 12 9.8
VOA Kv@100°C 12.1 14.8 15.5 15.7
I was a little concerned about how the XD-3 0w30 would perform under the harsh winter conditions and if it would shear badly like it's xs-3 0w40 cousin did but I am pleasantly suprised how it sheared the least % wise vs the other oils. Unless it sheared badly and it's now thickening.
Overall I think for the price, about $4 Cnd this oil performed very well in my engine and I'm planning to use it all year round.
Any suggestions on what to do about the fuel contamination? I do a fair amount of stop and go at work but I don't idle for more than 5 mins at a time and mostly less actually. So no more than a person would in heavy traffic. This is mixed in with hwy driving and normal city driving. I've seen many other 6.0 analysis and none of them have such high fuel for so long. My oil level does not move up on the dipstick through the interval. With the TBN at 7, this oil would hold up a lot longer and better if not for the fuel contamination.