Good evening everyone,
I'm new to this website and can use some suggestions on what type of oil I should start using in my Cherokee. I just received a UOA from Blackstone Labs--the first UOA I have ever received.
I purchased this vehicle used in the year 2000. It had 21,000 miles on it when I bought it. I have used Mobil 1 10w30 fully synthetic in it since day one (of me owning it).
First, when looking at the averages compared to my score, which numbers should be high and which numbers should be low? Second, my research shows that Jeep 4.0L engines have high iron wear with Mobil 1 synthetic oil (wish I would have known this 6+ years ago!). I don't know what to do about the aluminum wear.
What brand and type of oil will provide the best engine wear and alleviate my higher-than-average iron and aluminum wear?
Check out the UOA results:
EQUIPMENT MAKE: Jeep
EQUIPMENT MODEL: 4.0L Inline 6 cyl
FUEL TYPE: Gasoline (Unleaded)
OIL USE INTERVAL: 3,452 Miles
OIL TYPE & GRADE: Mobil 1 10W/30
MAKE-UP OIL ADDED: 0 qts
TOM: Universal averages show typical wear metals from this type of engine after about 4500 miles run on the oil. Your oil was in use 3452 miles, yet we found iron and aluminum reading higher than average. Neither is high enough to call a serious problem, though we would like to see another sample next oil change to keep an eye on them. They are coming from the upper end. No moisture or anti-freeze was present that would be causing the wear. Everything else looks good. The TBN read 4.1, still active additive remaining. Stay at 3000-3500 miles to monitor.
TOM'S JEEP / AVERAGE
ALUMINUM 7/3
CHROMIUM 1/1
IRON 74/25
COPPER 3/4
LEAD 5/4
TIN 0/1
MOLYBDENUM 96/54
NICKEL 2/1
MANGANESE 0/1
SILVER 0/0
TITANIUM 0/0
POTASSIUM 8/2
BORON 50/44
SILICON 7/11
SODIUM 11/10
CALCIUM 2636/2044
MAGNESIUM 17/155
PHOSPHORUS 639/716
ZINC 726/861
BARIUM 0/0
I'm new to this website and can use some suggestions on what type of oil I should start using in my Cherokee. I just received a UOA from Blackstone Labs--the first UOA I have ever received.
I purchased this vehicle used in the year 2000. It had 21,000 miles on it when I bought it. I have used Mobil 1 10w30 fully synthetic in it since day one (of me owning it).
First, when looking at the averages compared to my score, which numbers should be high and which numbers should be low? Second, my research shows that Jeep 4.0L engines have high iron wear with Mobil 1 synthetic oil (wish I would have known this 6+ years ago!). I don't know what to do about the aluminum wear.
What brand and type of oil will provide the best engine wear and alleviate my higher-than-average iron and aluminum wear?
Check out the UOA results:
EQUIPMENT MAKE: Jeep
EQUIPMENT MODEL: 4.0L Inline 6 cyl
FUEL TYPE: Gasoline (Unleaded)
OIL USE INTERVAL: 3,452 Miles
OIL TYPE & GRADE: Mobil 1 10W/30
MAKE-UP OIL ADDED: 0 qts
TOM: Universal averages show typical wear metals from this type of engine after about 4500 miles run on the oil. Your oil was in use 3452 miles, yet we found iron and aluminum reading higher than average. Neither is high enough to call a serious problem, though we would like to see another sample next oil change to keep an eye on them. They are coming from the upper end. No moisture or anti-freeze was present that would be causing the wear. Everything else looks good. The TBN read 4.1, still active additive remaining. Stay at 3000-3500 miles to monitor.
TOM'S JEEP / AVERAGE
ALUMINUM 7/3
CHROMIUM 1/1
IRON 74/25
COPPER 3/4
LEAD 5/4
TIN 0/1
MOLYBDENUM 96/54
NICKEL 2/1
MANGANESE 0/1
SILVER 0/0
TITANIUM 0/0
POTASSIUM 8/2
BORON 50/44
SILICON 7/11
SODIUM 11/10
CALCIUM 2636/2044
MAGNESIUM 17/155
PHOSPHORUS 639/716
ZINC 726/861
BARIUM 0/0