My buddy did a analysis with Blackstone a while back after I suggested it to him. '94 Grand Cherokee with the 4.0 @ 140K.
Evidently the store had only 3qts of PP and 4qts Mobil 0w-30. He was going for thin stuff but I don't think the 5w-20 helped. He did 3qts of PP and 3.25 of Mobil.
This sample is from winter use here in Chicago, uses it mainly for work so it sees 50/50 city/highway with a lot of built up idle time. He's also a lead footed driver. About half minute warm up times when started from cold.
ALUMINUM 5
CHROMIUM 2
IRON 65
COPPER 2
LEAD 3
MOLYBDENUM 69
POTASSIUM 2
BORON 35
SILICON 12
SODIUM 10
CALCIUM 2145
MAGNESIUM 13
PHOSPHORUS 620
ZINC 767
cSt Viscosity @ 100°C 9.02
SUS Viscosity @ 210°F 55.8
Flashpoint in °F 340
Fuel % 0.8
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.3
No TBN
Normally he runs a 5w-30 in winter and switches to a HDEO in the winter. Don't really have anything to compare it to since it is the first analysis but the iron is up there. I know the long idle times aren't helping but he needs the motor running in order to power some equipment on site.
Evidently the store had only 3qts of PP and 4qts Mobil 0w-30. He was going for thin stuff but I don't think the 5w-20 helped. He did 3qts of PP and 3.25 of Mobil.
This sample is from winter use here in Chicago, uses it mainly for work so it sees 50/50 city/highway with a lot of built up idle time. He's also a lead footed driver. About half minute warm up times when started from cold.
ALUMINUM 5
CHROMIUM 2
IRON 65
COPPER 2
LEAD 3
MOLYBDENUM 69
POTASSIUM 2
BORON 35
SILICON 12
SODIUM 10
CALCIUM 2145
MAGNESIUM 13
PHOSPHORUS 620
ZINC 767
cSt Viscosity @ 100°C 9.02
SUS Viscosity @ 210°F 55.8
Flashpoint in °F 340
Fuel % 0.8
Antifreeze % 0.0
Water % 0.0
Insolubles % 0.3
No TBN
Normally he runs a 5w-30 in winter and switches to a HDEO in the winter. Don't really have anything to compare it to since it is the first analysis but the iron is up there. I know the long idle times aren't helping but he needs the motor running in order to power some equipment on site.