I just got the results from two oil samples sent in for analysis – one to Oil Analyzers - one to Oil Guard. Oil Analyzers reports CU at 964ppm
but OilGuard says 30ppm.
Normally I wouldn’t be sending two samples but the OilGuard Bypass filter came with a free kit and I already had some Oil Analyzer kits. Other key parameters, FE and SI ppm are also quite different as follows:
Parameter, OA, OG
COPPER, 964, 30
SILICON, 8, 22
IRON, 34, 14
CHROMIUM, 1, 3
LEAD, 3, 8
TIN, 0, 2
ALUMINUM, 4, 4
NICKEL, 0, NT
SILVER, 0, NT
BORON, 6, NT
SODIUM, 0, 7
MAGNESIUM, 116, NT
CALCIUM, 3614, NT
BARIUM, 0, NT
PHOSPHORUS, 1209, NT
ZINC, 1309, NT
MOLYBDENUM, 0, NT
TITANIUM, 0, NT
VANADIUM, 0, NT
POTASIUM, 0, 4
FUEL %, VIS@100C, 14.07, 15.5
WATER %, 0, SOOT/SOLIDS %, 0.1, GLYCOL, NEG, NEG
TBN, 9.11, 8.7
OXIDATION, 7, NT
NITRATION, 5, NT
F-SOOT, 0.01, NT
NT - Not tested
These samples were taken with 9393 miles on my 2003 Chevy 2500HD Duramax Diesel and 4362 miles on the oil. Oil was AMSOIL 15w40 synthetic. Prior to this I had changed the oil at 1kmi, 2kmi and 3kmi with DELO 15w40. I sent a sample to OilAnalyzers from the 3kmi Delo change. Cu was 24ppm, Si 22ppm and Fe 9ppm. At the 3kmi change I put in AMSOIL 15w40. At 5k I installed an OilGuard Bypass filter and refilled with fresh AMSOIL 15w40. Oil samples were taken mid stream while draining.
If had only sent a sample to Oil Analyzers I would REALLY be worried.
Anyone have any thoughts on why there is such a difference between the reports on the same oil sent to two different test houses?
Is this common? Is there a certification process for Oil Test Houses? I’m thinking about doing double samples for a while until I get correlation in the results.
Hmmm… Wait a minute
… this is getting expensive - even for the ultra-anal… Synthetic oil, dual tests, bypass filter and three fuel filters...
[ July 13, 2003, 07:32 AM: Message edited by: Bill Plock ]
Parameter, OA, OG
COPPER, 964, 30
SILICON, 8, 22
IRON, 34, 14
CHROMIUM, 1, 3
LEAD, 3, 8
TIN, 0, 2
ALUMINUM, 4, 4
NICKEL, 0, NT
SILVER, 0, NT
BORON, 6, NT
SODIUM, 0, 7
MAGNESIUM, 116, NT
CALCIUM, 3614, NT
BARIUM, 0, NT
PHOSPHORUS, 1209, NT
ZINC, 1309, NT
MOLYBDENUM, 0, NT
TITANIUM, 0, NT
VANADIUM, 0, NT
POTASIUM, 0, 4
FUEL %, VIS@100C, 14.07, 15.5
WATER %, 0, SOOT/SOLIDS %, 0.1, GLYCOL, NEG, NEG
TBN, 9.11, 8.7
OXIDATION, 7, NT
NITRATION, 5, NT
F-SOOT, 0.01, NT
NT - Not tested
These samples were taken with 9393 miles on my 2003 Chevy 2500HD Duramax Diesel and 4362 miles on the oil. Oil was AMSOIL 15w40 synthetic. Prior to this I had changed the oil at 1kmi, 2kmi and 3kmi with DELO 15w40. I sent a sample to OilAnalyzers from the 3kmi Delo change. Cu was 24ppm, Si 22ppm and Fe 9ppm. At the 3kmi change I put in AMSOIL 15w40. At 5k I installed an OilGuard Bypass filter and refilled with fresh AMSOIL 15w40. Oil samples were taken mid stream while draining.
If had only sent a sample to Oil Analyzers I would REALLY be worried.
Is this common? Is there a certification process for Oil Test Houses? I’m thinking about doing double samples for a while until I get correlation in the results.
Hmmm… Wait a minute
[ July 13, 2003, 07:32 AM: Message edited by: Bill Plock ]