Hi everyone, I had a UOA done on my 165,000m Mitsubishi Diamante. 7,7xx miles on this oil which was Shell Helix Ultra 5W40 and a half can of Liquimoly MoS2. My last UOA on this car (same oil, no MoS2 though): https:/
The car is used on short to medium trips most of the time.
I towed a heavy load for about 1,000miles in this OCI (roughly 3,500lb load).
1. There is much more nitration, oxidation and sulphation this time around - Could this be the MoS2 additive?
2. Wear metals went down slightly though this oil has about 1,000 miles more than the last UOA, though tin is up.
3. My fuel dilution is high (I believe that is percentage) even though this sample was taken after towing for 150 miles straight. Could this be from blowby?
4. Some numbers (soot, TBN) look like they weren't tested? Though other items not tested have N/A next to them.
Comments greatly appreciated!
www.bobistheoilguy.com/ forums/ ubbthreads.php/ topics/ 4900608/ 2003-diamante-shu-5w40-6817m-oci
Lead 41 Iron 11 Aluminum 5 Copper 7 Chromium 0 Tin 4 Nickel 0 Silicon 31 Sodium 5 Magnesium 21 Zinc 112 Molybdenum 262 Calcium 2624 Phosphorus 858 Boron 64 TBN 0 Soot 0 Glycol 0 Water 0 Fuel Dilution 5 (% or ppm???) Oxidation 23 Nitration 41 Sulphation 29 TAN 0 f.debrus (mg fe/l) 1 Viscosity @100 C 0 Viscosity @40 C 88