I put a lot of miles on this Golf TDI, all but the first 5k with Mobil Delvac 1 5w40 or Mobil 1 Truck & SUV 5w40. Recently I decided I would try Elf Evolution 0w30, an extended service oil -- up to 30k miles -- that meets the VW 506.01 specification.
So to get a baseline, I decided to run a UOA on my last fill of Mobil Delvac.
Miles on engine 161,421
Miles on oil 9,566
Wix oil filter
Tested by Oil Analyzers Inc.
Iron 38
Chromium 1
Lead 2
Copper 3
Tin 0
Aluminum 7
Nickel 0
Silver 0
Silicon 5
Boron 29
Sodium 0
Magnesium 615
Calcium 2775
Barium 0
Phosphorus 1231
Zinc 1528
Moly 1
all others 0
Fuel < 1
Viscosity @ 100C =15.33
Water 0
Soot 1.2%
Coolant = none
TBN = 7.35
F-Soot =1.28
No corrective action required. Oil is suitable for continued use.
Mostly I've run 10k-miles OCI, went to 12k once, this was just a little shy of 10k.
I'm no expert, but this looks good to me.
So to get a baseline, I decided to run a UOA on my last fill of Mobil Delvac.
Miles on engine 161,421
Miles on oil 9,566
Wix oil filter
Tested by Oil Analyzers Inc.
Iron 38
Chromium 1
Lead 2
Copper 3
Tin 0
Aluminum 7
Nickel 0
Silver 0
Silicon 5
Boron 29
Sodium 0
Magnesium 615
Calcium 2775
Barium 0
Phosphorus 1231
Zinc 1528
Moly 1
all others 0
Fuel < 1
Viscosity @ 100C =15.33
Water 0
Soot 1.2%
Coolant = none
TBN = 7.35
F-Soot =1.28
No corrective action required. Oil is suitable for continued use.
Mostly I've run 10k-miles OCI, went to 12k once, this was just a little shy of 10k.
I'm no expert, but this looks good to me.