This is the 9th UOA I've done on this vehicle.
The reason I do extended oil changes and used oil analysis is so we might all learn something, and I find it interesting.
This analysis is about Mobil1 5-30w EP. The oil was 13 mths old, w/13,000 miles. The vehicle is a 07 Toyota FJ Cruiser w/a gasoline 4.0L engine that has 169k miles since new. No make-up oil was added, because it doesn't use any. The vehicle is my daily driver. We live in the country, so it doesn't see much stop and go driving. In fact, my daughter moved out over a yr ago, so its getting even fewer short trips and not as many miles/yr as in the past.
I put a Parento TopDog V brand engine oil bypass filtration system on the vehicle 7 yrs ago. This bypass system utilizes one Amsoil EaBP90 filter. The EaBP90 spin-on element was last changed Nov of 2014, 37k miles ago. I changed the bypass system O-rings and the oil lines this time since they were 7 yrs old.
The air filter is an Amsoil EaA238(discontinued) element with 98k miles since new. I blow it out at each oil change. Before suggesting to me that is where the SI is coming from, take note the early results are even worse. Over the yrs, I've looked for induction system leaks and tried 3 different brand air filters elements in hope of reducing the Si/silicon level, all without success. This filter works as good or better than any that I've tried.
Mobil 1 EP is relatively cheap and readily available at WalMart. I liked these results. The additive package had some life left in it, even after 13k miles, with a TBN of 2.92. My personal lower limit for TBN is 2.0. IMO, so far I haven't damaged this vehicle, and I'm not wasting as much time and oil as I use to when I was changing my oil and filter every 3K miles.
Immediately after I took this sample, I changed the oil w/Mobil1 Annual Protection(more $). I changed the Fram XG8A full flow filter and the Amsoil EaBP90 bypass filter w/new too.
LAB: Oil Analyzers Inc - OAI(Polaris Laboratories)
LAB COMMENTS: Continue to observe the trend and monitor equipment and fluid conditions. TBN base# is MODERATELY LOW. As TBN base# depletes, the ability to neutralize acids is diminished and corrosive wear may occur. Sludge and deposits may form. Silicon is at a MINOR LEVEL. Boron is slightly low for this lubricant. Boron sources may naturally decline with use so this is not a concern.
Old results on left side, newer as you go right
Code:
Iron 28...14...12.....7...21...17....19....21....22
Chromium 0.....0....0.....0....0....0.....0.....0.....0
Copper 1.....1....1.....0....1....0.....1.....1.....1
Tin 0.....1....0.....0....0....0.....0.....0.....0
Lead 0.....0....0.....0....0....0.....0.....0.....0
Chrom 0.....0....0.....0....0....0.....0.....0.....0
Nickel 0.....0....0.....0....0....0.....0.....0.....0
Alum 5.....6....7.....1....3....2.....0.....3.....3
Silver 0.....0....0.....0....0....0.....0.....0.....0
Cadmium 0.....0....0.....0....0....0.....0.....0.....0
Vanadium 0.....0....0.....1....0....0.....0.....0.....0
CONTAMINANT METALS-PPM
Silicon 56.....70....43...32...33...37...38....30...25
Sodium 168....45....17...28...29...31...29....21...23
Potassium 4......2.....2....4....3....5....1.....,3....3
MULTI SOURCE METALS
Manganese 0......0....0....0.....0....0....0.....0....0
Titan 0......0....0....0.....0....0....0.....0....0
Molybdenum 2......0....0....0.....0....0...32....65...77
Antim 0......0....0....0.....0....0....1.....0....0
Lithium 0......0....0....0.....0....0....1.....0....0
Boron 6......4....3....1.....1....2....1....20...26
ADDITIVE METALS-PPM
Magnesium 14....11....16....10....13....11....12....535...684
Calcium 3394..3531..4351..3589..3022..3520..2417..1311..1086
Barium 0.....0......0.....0.....0.....0.....0.....0.....0
Phosph 568...497....809...929...895..1037...643...662...684
Zinc 691...591....989..1130..1084..1236...757...817...836
V100C 10.9. .10.8..12.7..14.3...15.2..12.7...10.2...10.3...10.2
IR Oxidation 58......64.....61....25.....67....50.....27.....23....17
IR Nitra 39......41.....17.....9.....18....18.....15.....15....11
TBN 2.66.. .2.18...2.48...2.35...1.89...2.22...1.43...2.64..2.92
Fuel
Soot Vol
Water Vol
The reason I do extended oil changes and used oil analysis is so we might all learn something, and I find it interesting.
This analysis is about Mobil1 5-30w EP. The oil was 13 mths old, w/13,000 miles. The vehicle is a 07 Toyota FJ Cruiser w/a gasoline 4.0L engine that has 169k miles since new. No make-up oil was added, because it doesn't use any. The vehicle is my daily driver. We live in the country, so it doesn't see much stop and go driving. In fact, my daughter moved out over a yr ago, so its getting even fewer short trips and not as many miles/yr as in the past.
I put a Parento TopDog V brand engine oil bypass filtration system on the vehicle 7 yrs ago. This bypass system utilizes one Amsoil EaBP90 filter. The EaBP90 spin-on element was last changed Nov of 2014, 37k miles ago. I changed the bypass system O-rings and the oil lines this time since they were 7 yrs old.
The air filter is an Amsoil EaA238(discontinued) element with 98k miles since new. I blow it out at each oil change. Before suggesting to me that is where the SI is coming from, take note the early results are even worse. Over the yrs, I've looked for induction system leaks and tried 3 different brand air filters elements in hope of reducing the Si/silicon level, all without success. This filter works as good or better than any that I've tried.
Mobil 1 EP is relatively cheap and readily available at WalMart. I liked these results. The additive package had some life left in it, even after 13k miles, with a TBN of 2.92. My personal lower limit for TBN is 2.0. IMO, so far I haven't damaged this vehicle, and I'm not wasting as much time and oil as I use to when I was changing my oil and filter every 3K miles.
Immediately after I took this sample, I changed the oil w/Mobil1 Annual Protection(more $). I changed the Fram XG8A full flow filter and the Amsoil EaBP90 bypass filter w/new too.
LAB: Oil Analyzers Inc - OAI(Polaris Laboratories)
LAB COMMENTS: Continue to observe the trend and monitor equipment and fluid conditions. TBN base# is MODERATELY LOW. As TBN base# depletes, the ability to neutralize acids is diminished and corrosive wear may occur. Sludge and deposits may form. Silicon is at a MINOR LEVEL. Boron is slightly low for this lubricant. Boron sources may naturally decline with use so this is not a concern.
Old results on left side, newer as you go right
Code:
Iron 28...14...12.....7...21...17....19....21....22
Chromium 0.....0....0.....0....0....0.....0.....0.....0
Copper 1.....1....1.....0....1....0.....1.....1.....1
Tin 0.....1....0.....0....0....0.....0.....0.....0
Lead 0.....0....0.....0....0....0.....0.....0.....0
Chrom 0.....0....0.....0....0....0.....0.....0.....0
Nickel 0.....0....0.....0....0....0.....0.....0.....0
Alum 5.....6....7.....1....3....2.....0.....3.....3
Silver 0.....0....0.....0....0....0.....0.....0.....0
Cadmium 0.....0....0.....0....0....0.....0.....0.....0
Vanadium 0.....0....0.....1....0....0.....0.....0.....0
CONTAMINANT METALS-PPM
Silicon 56.....70....43...32...33...37...38....30...25
Sodium 168....45....17...28...29...31...29....21...23
Potassium 4......2.....2....4....3....5....1.....,3....3
MULTI SOURCE METALS
Manganese 0......0....0....0.....0....0....0.....0....0
Titan 0......0....0....0.....0....0....0.....0....0
Molybdenum 2......0....0....0.....0....0...32....65...77
Antim 0......0....0....0.....0....0....1.....0....0
Lithium 0......0....0....0.....0....0....1.....0....0
Boron 6......4....3....1.....1....2....1....20...26
ADDITIVE METALS-PPM
Magnesium 14....11....16....10....13....11....12....535...684
Calcium 3394..3531..4351..3589..3022..3520..2417..1311..1086
Barium 0.....0......0.....0.....0.....0.....0.....0.....0
Phosph 568...497....809...929...895..1037...643...662...684
Zinc 691...591....989..1130..1084..1236...757...817...836
V100C 10.9. .10.8..12.7..14.3...15.2..12.7...10.2...10.3...10.2
IR Oxidation 58......64.....61....25.....67....50.....27.....23....17
IR Nitra 39......41.....17.....9.....18....18.....15.....15....11
TBN 2.66.. .2.18...2.48...2.35...1.89...2.22...1.43...2.64..2.92
Fuel
Soot Vol
Water Vol
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