Got permission to post this UOA
"We found a little more lead in this sample than expected, but we doubt the 9 ppm that turned up in your oil will cause any lost sleep. Lead comes from bearings, which is the very heart of your engine. It would be normal at 5 ppm in this sample. We don't think the 7,500 miles you've put on this oil are the cause of the above average lead. It could be high due to a particle streak though the bearings, which is a temporary thing. This was Mobil 1 10W/30 oil with no gas or engine coolant in it. The TBN was 3.9, which is okay. Try 8,000 miles next time.
MI/HR ON OIL: 7,500 miles --- 3,750 ------ 3,800
MI/HR ON UNIT: 82,500 miles 67,500 ----- 48,800
SAMPLE DATE: 9/5/04 ------- 10/07/03 --- 11/25/02
ALUMINUM: ---- 3 ------ 3 --------- 3
CHROMIUM: ---- 1 ------ 0 --------- 0
IRON: -------- 7 ------ 6 --------- 6
COPPER: ------ 4 ------ 4 --------- 3
LEAD: -------- 9 ------ 4 --------- 4
TIN: --------- 1 ------ 0 --------- 0
MOLYBDENUM: -- 89 ---- 62 -------- 68
NICKEL: ------ 0 ------ 0 --------- 0
MANGANESE: --- 0 ------ 0 --------- 0
SILVER: ------ 0 ------ 0 --------- 0
TITANIUM: ---- 0 ------ 0 --------- 0
POTASSIUM: --- 0 ------ 0 --------- 0
BORON: ------ 146 ---- 138 ------- 127
SILICON: ----- 6 ------ 4 --------- 5
SODIUM: ------ 6 ------ 6 --------- 7
CALCIUM: --- 2962 --- 2912 ------ 2623
MAGNESIUM: --- 14 ----- 19 -------- 14
PHOSPHORUS: - 785 ----- 776 ------- 766
ZINC: ------- 913 ----- 890 ------- 840
BARIUM: ------ 0 ------- 0 --------- 0
SUS VISCOSITY @ 210 ºF: --- 61.4 (Average 59 - 68)
FLASHPOINT IN ºF: ---------- 410 (Average 365)
FUEL %: ------------------- .5 (Average 2.0)
ANTIFREEZE %: -------------- 0 (Average 0)
WATER %: ------------------ .0 (Average .1)
INSOLUBLES %: -------------- .2 (Average .6)
Owners comments: and thanks
"I'd say that this is pretty good. The lead seems to be at 4 PPM in the last 3,750 mile oil samples so 7,500 miles should be at 8 PPM, but I guess 9 is ok. I'll start another 7,500 mile test at 90,000 miles to 97,500 miles & check for lead again.
Mind you that this motor sees near redline action up to 25 minutes at a time along with lots of cornering loads. This stuff really works. I'm sticking to 7,500 mile oil changes with Mobil 1 10W-30 SuperSyn & K&N HP-1010 oil filters from here on. "
"We found a little more lead in this sample than expected, but we doubt the 9 ppm that turned up in your oil will cause any lost sleep. Lead comes from bearings, which is the very heart of your engine. It would be normal at 5 ppm in this sample. We don't think the 7,500 miles you've put on this oil are the cause of the above average lead. It could be high due to a particle streak though the bearings, which is a temporary thing. This was Mobil 1 10W/30 oil with no gas or engine coolant in it. The TBN was 3.9, which is okay. Try 8,000 miles next time.
MI/HR ON OIL: 7,500 miles --- 3,750 ------ 3,800
MI/HR ON UNIT: 82,500 miles 67,500 ----- 48,800
SAMPLE DATE: 9/5/04 ------- 10/07/03 --- 11/25/02
ALUMINUM: ---- 3 ------ 3 --------- 3
CHROMIUM: ---- 1 ------ 0 --------- 0
IRON: -------- 7 ------ 6 --------- 6
COPPER: ------ 4 ------ 4 --------- 3
LEAD: -------- 9 ------ 4 --------- 4
TIN: --------- 1 ------ 0 --------- 0
MOLYBDENUM: -- 89 ---- 62 -------- 68
NICKEL: ------ 0 ------ 0 --------- 0
MANGANESE: --- 0 ------ 0 --------- 0
SILVER: ------ 0 ------ 0 --------- 0
TITANIUM: ---- 0 ------ 0 --------- 0
POTASSIUM: --- 0 ------ 0 --------- 0
BORON: ------ 146 ---- 138 ------- 127
SILICON: ----- 6 ------ 4 --------- 5
SODIUM: ------ 6 ------ 6 --------- 7
CALCIUM: --- 2962 --- 2912 ------ 2623
MAGNESIUM: --- 14 ----- 19 -------- 14
PHOSPHORUS: - 785 ----- 776 ------- 766
ZINC: ------- 913 ----- 890 ------- 840
BARIUM: ------ 0 ------- 0 --------- 0
SUS VISCOSITY @ 210 ºF: --- 61.4 (Average 59 - 68)
FLASHPOINT IN ºF: ---------- 410 (Average 365)
FUEL %: ------------------- .5 (Average 2.0)
ANTIFREEZE %: -------------- 0 (Average 0)
WATER %: ------------------ .0 (Average .1)
INSOLUBLES %: -------------- .2 (Average .6)
Owners comments: and thanks
"I'd say that this is pretty good. The lead seems to be at 4 PPM in the last 3,750 mile oil samples so 7,500 miles should be at 8 PPM, but I guess 9 is ok. I'll start another 7,500 mile test at 90,000 miles to 97,500 miles & check for lead again.
Mind you that this motor sees near redline action up to 25 minutes at a time along with lots of cornering loads. This stuff really works. I'm sticking to 7,500 mile oil changes with Mobil 1 10W-30 SuperSyn & K&N HP-1010 oil filters from here on. "
