Back on June 13th I posted UOA results on Delvac 1 after 9566 miles, as I prepared for a test run using Elf Evolution 0w30 meeting the VW506.01 spec for extended drain intervals.
http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=26;t=000277
I received the results of a UOA test after 10674 miles using the Elf, and I'm very unhappy. Not only did I not observe any improvement in fuel economy, but the wear numbers look terrible. I'll be changing out this oil and going back to Mobil Delvac 1 5w40 later today.
Tested by Oil Analyzers Inc.
First number is Delvac. Second number is Elf
May 28 -- July 29
161421 -- 172095 (10674 miles on sample)
Iron 38 -- 96
Chromium 1 -- 2
Lead 2 -- 3
Copper 3 -- 4
Tin 0 -- 0
Aluminum 7 -- 7
Nickel 0 -- 4
Silver 0 -- 0
Silicon 5 -- 10
Boron 29 -- 82
Sodium 0 -- 0
Magnesium 615 -- 367
Calcium 2775 -- 3109
Barium 0 -- 0
Phosphorus 1231 -- 1133
Zinc 1528 -- 1477
Moly 1 -- 0
all others 0 -- 0
Fuel < 1 -- < 1
Viscosity @ 100C =15.33 -- 11.39
Water 0 -- 0
Soot 1.2% -- 1.6%
Coolant = none -- none
TBN = 7.35 -- 6.52
Again, Oil Analyzers suggests no corrective action required, resample at next regular interval. That's not going to happen.
Though I think I will take another sample, just to confirm the numbers. I've got about 13.5k miles on the oil right now.
Comments on the Fe, and the soot?
http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=26;t=000277
I received the results of a UOA test after 10674 miles using the Elf, and I'm very unhappy. Not only did I not observe any improvement in fuel economy, but the wear numbers look terrible. I'll be changing out this oil and going back to Mobil Delvac 1 5w40 later today.
Tested by Oil Analyzers Inc.
First number is Delvac. Second number is Elf
May 28 -- July 29
161421 -- 172095 (10674 miles on sample)
Iron 38 -- 96
Chromium 1 -- 2
Lead 2 -- 3
Copper 3 -- 4
Tin 0 -- 0
Aluminum 7 -- 7
Nickel 0 -- 4
Silver 0 -- 0
Silicon 5 -- 10
Boron 29 -- 82
Sodium 0 -- 0
Magnesium 615 -- 367
Calcium 2775 -- 3109
Barium 0 -- 0
Phosphorus 1231 -- 1133
Zinc 1528 -- 1477
Moly 1 -- 0
all others 0 -- 0
Fuel < 1 -- < 1
Viscosity @ 100C =15.33 -- 11.39
Water 0 -- 0
Soot 1.2% -- 1.6%
Coolant = none -- none
TBN = 7.35 -- 6.52
Again, Oil Analyzers suggests no corrective action required, resample at next regular interval. That's not going to happen.
Though I think I will take another sample, just to confirm the numbers. I've got about 13.5k miles on the oil right now.
Comments on the Fe, and the soot?