The reason I do extended oil changes and used oil analysis is so we might all learn something, plus I find it interesting.
This is the 8th UOA I've done on this vehicle.
This analysis is about Mobil1 5-30w. The oil is 8 mths old, w/11,000 miles. The vehicle is a 07 Toyota FJ Cruiser w/a gasoline 4.0L engine that has 153k miles since new. I didn't dump/change anything when I took this sample. I always wait to see the UOA results. 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.
Many yrs ago I put a TopDog brand engine oil bypass filtration system on that utilizes the Amsoil EaBP90 filter that was last changed Nov of 2014, 21k miles ago. The air filter is an Amsoil EaA238(discontinued) element with 68k miles since new. I blew it out again at the start of this run. 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.
Mobil1 is relatively cheap and readily available at WalMart. I liked these results. The additive package has some life left in it after 11k miles(2.64 TBN). I'm going to leave the current oil and filters in place for 2k-3k more miles. I personally don't like a TBN# below 2.0.
In a few thousand miles when I change the oil I'm gonna try Rotella T3 15-40w to see how its additive package etc holds up compared to the synthetic oils I've tried. I'll change the Fram XG8A full flow filter with another but leave the Amsoil EaBP90 bypass filter element in place for another run. I always remove and drain the bypass filter when I change oil.
LAB: Oil Analyzers Inc - OAI(Polaris)
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.
Old on left, new on right
Code:
WEAR METALS-PPM
Iron 28....14...12.....7...21...17....19....21
Chromium 0......0....0.....0....0....0.....0.....0
Copper 1......1....1.....0....1....0.....1.....1
Tin 0......1....0.....0....0....0.....0.....0
Lead 0......0....0.....0....0....0.....0.....0
Chrom 0......0....0.....0....0....0.....0.....0
Nickel 0......0....0.....0....0....0.....0.....0
Alum 5......6....7.....1....3....2.....0.....3
Silver 0......0....0.....0....0....0.....0.....0
Cadmium 0......0....0.....0....0....0.....0.....0
Vanadium 0......0....0.....1....0....0.....0.....0
CONTAMINANT METALS-PPM
Silicon 56.....70....43...32...33...37...38....30
Sodium 168....45....17...28...29...31...29....21
Potassium 4......2.....2....4....3....5....1.....3
MULTI SOURCE METALS
Manganese 0......0....0....0.....0....0....0.....0
Titan 0......0....0....0.....0....0....0.....0
Molybdenum 2......0....0....0.....0....0...32....65
Antim 0......0....0....0.....0....0....1.....0
Lithium 0......0....0....0.....0....0....1.....0
Boron 6......4....3....1.....1....2....1....20
ADDITIVE METALS-PPM
Magnesium .14....11....16....10....13....11....12....535
Calcium 3394..3531..4351..3589..3022..3520..2417..1311
Barium .0.....0......0.....0.....0.....0.....0.....0
Phosph 568...497....809...929...895..1037...643...662
Zinc 691...591....989..1130..1084..1236...757...817
V100C 10.9...10.8...12.7....14.3...15.2..12.7...10.2...10.3
I-R Oxidation 58......64.....61......25.....67....50.....27.....23
I-R Nitra 39......41.....17.......9.....18....18.....15.....15
TBN 2.66...2.18...2.48....2.35...1.89...2.22....1.43...2.64
Fuel
Soot Vol
Water Vol
This is the 8th UOA I've done on this vehicle.
This analysis is about Mobil1 5-30w. The oil is 8 mths old, w/11,000 miles. The vehicle is a 07 Toyota FJ Cruiser w/a gasoline 4.0L engine that has 153k miles since new. I didn't dump/change anything when I took this sample. I always wait to see the UOA results. 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.
Many yrs ago I put a TopDog brand engine oil bypass filtration system on that utilizes the Amsoil EaBP90 filter that was last changed Nov of 2014, 21k miles ago. The air filter is an Amsoil EaA238(discontinued) element with 68k miles since new. I blew it out again at the start of this run. 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.
Mobil1 is relatively cheap and readily available at WalMart. I liked these results. The additive package has some life left in it after 11k miles(2.64 TBN). I'm going to leave the current oil and filters in place for 2k-3k more miles. I personally don't like a TBN# below 2.0.
In a few thousand miles when I change the oil I'm gonna try Rotella T3 15-40w to see how its additive package etc holds up compared to the synthetic oils I've tried. I'll change the Fram XG8A full flow filter with another but leave the Amsoil EaBP90 bypass filter element in place for another run. I always remove and drain the bypass filter when I change oil.
LAB: Oil Analyzers Inc - OAI(Polaris)
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.
Old on left, new on right
Code:
WEAR METALS-PPM
Iron 28....14...12.....7...21...17....19....21
Chromium 0......0....0.....0....0....0.....0.....0
Copper 1......1....1.....0....1....0.....1.....1
Tin 0......1....0.....0....0....0.....0.....0
Lead 0......0....0.....0....0....0.....0.....0
Chrom 0......0....0.....0....0....0.....0.....0
Nickel 0......0....0.....0....0....0.....0.....0
Alum 5......6....7.....1....3....2.....0.....3
Silver 0......0....0.....0....0....0.....0.....0
Cadmium 0......0....0.....0....0....0.....0.....0
Vanadium 0......0....0.....1....0....0.....0.....0
CONTAMINANT METALS-PPM
Silicon 56.....70....43...32...33...37...38....30
Sodium 168....45....17...28...29...31...29....21
Potassium 4......2.....2....4....3....5....1.....3
MULTI SOURCE METALS
Manganese 0......0....0....0.....0....0....0.....0
Titan 0......0....0....0.....0....0....0.....0
Molybdenum 2......0....0....0.....0....0...32....65
Antim 0......0....0....0.....0....0....1.....0
Lithium 0......0....0....0.....0....0....1.....0
Boron 6......4....3....1.....1....2....1....20
ADDITIVE METALS-PPM
Magnesium .14....11....16....10....13....11....12....535
Calcium 3394..3531..4351..3589..3022..3520..2417..1311
Barium .0.....0......0.....0.....0.....0.....0.....0
Phosph 568...497....809...929...895..1037...643...662
Zinc 691...591....989..1130..1084..1236...757...817
V100C 10.9...10.8...12.7....14.3...15.2..12.7...10.2...10.3
I-R Oxidation 58......64.....61......25.....67....50.....27.....23
I-R Nitra 39......41.....17.......9.....18....18.....15.....15
TBN 2.66...2.18...2.48....2.35...1.89...2.22....1.43...2.64
Fuel
Soot Vol
Water Vol