Blackstone comments: Most of the metals either stayed steady or dropped a small amount, but chrome is on the rise. It's from the rings and it sometimes doesn't take a lot of chrome to show a problem like maybe a stuck or cracked ring. You didn't add any oil this time. Any changes on oil use? Silicon is higher here. That can show dirt getting past the air filtration system, so check that for leaks or cracks. It might also be a harmless sealer if any work was done. The TBN is strong at 7.9, but we're not recommending a longer run due to the chrome. Check back in 8,000 miles.
Miles on oil: 9,830
Miles on Unit: 84,930
Makeup oil: 0 qts
ALUMINUM - 3
CHROMIUM - 13 (FLAGGED)
IRON - 35
COPPER - 2
LEAD - 1
TIN - 0
MOLYBDENUM - 65
NICKEL - 0
MANGANESE - 0
SILVER - 0
TITANIUM - 0
POTASSIUM - 4
BORON - 44
SILICON - 52 (FLAGGED)
SODIUM - 5
CALCIUM - 1089
MAGNESIUM - 1226
PHOSPHORUS - 1180
ZINC - 1440
BARIUM - 2
SUS Viscosity @ 210°F - 72.7
cSt Viscosity @ 100°C - 13.65
Flashpoint in °F - 440
Fuel % - Antifreeze % - 0
Water % - 0
Insolubles % - 0.3
TBN - 7.9
Oil was in for 12 months and I used a Mobil 1 oil filter. The silicon is from the valve cover gaskets being changes. I forgot to tell Blackstone. Oil was down about 0.5 quarts when I changed it. I'm concerned about the high chromium.
Miles on oil: 9,830
Miles on Unit: 84,930
Makeup oil: 0 qts
ALUMINUM - 3
CHROMIUM - 13 (FLAGGED)
IRON - 35
COPPER - 2
LEAD - 1
TIN - 0
MOLYBDENUM - 65
NICKEL - 0
MANGANESE - 0
SILVER - 0
TITANIUM - 0
POTASSIUM - 4
BORON - 44
SILICON - 52 (FLAGGED)
SODIUM - 5
CALCIUM - 1089
MAGNESIUM - 1226
PHOSPHORUS - 1180
ZINC - 1440
BARIUM - 2
SUS Viscosity @ 210°F - 72.7
cSt Viscosity @ 100°C - 13.65
Flashpoint in °F - 440
Fuel % - Antifreeze % - 0
Water % - 0
Insolubles % - 0.3
TBN - 7.9
Oil was in for 12 months and I used a Mobil 1 oil filter. The silicon is from the valve cover gaskets being changes. I forgot to tell Blackstone. Oil was down about 0.5 quarts when I changed it. I'm concerned about the high chromium.