Two oil analysis, both done at a little over 1,000 miles on a 1987 911 used mostly for drivers education events on the track + the driving back and forth. Similar driving for both. The Redline had half a bottle of GM EOS added with about 100 miles to go, so I don't think it affected the wear numbers, but skewed the ZDDP. The Redline ran about 10 degrees cooler than the Brad Penn at the track. I have changed back to Redline, and may try Amsoil next to see if I can get the wear metals down.
___________ BP ___ RL
ALUMINUM ___ 4___ 3
CHROMIUM ___ 5 ___ 2
IRON ___ 27 ___ 20
COPPER ___ 12 ___ 8
LEAD ___ 44 ___ 216
TIN ___ 0 ___ 0
MOLYBDENUM ___ 48 ___ 398
NICKEL ___ 2 ___ 3
MANGANESE ___ 0 ___ 0
SILVER ___ 1 ___ 0
TITANIUM ___ 0 ___ 0
POTASSIUM ___ 0 ___ 1
BORON ___ 14 ___ 65
SILICON ___ 9 ___ 13
SODIUM ___ 322 ___ 53
CALCIUM ___ 1658 ___ 2656
MAGNESIUM ___ 557 ___ 67
PHOSPHORUS ___ 1016 ___ 1329
ZINC ___ 1319 ___ 1550
BARIUM ___ 0 ___ 1
SUS Viscosity @ 210°F ___ 85.5 ___ 95.8
cSt Viscosity @ 100°C ___ 16.89___19.36
Flashpoint in °F ___ 385 ___ 410
BP:Thanks for the note about the track time. Universal averages show typical wear levels for a
Porsche 3.2L after about 2,800 (street) miles on the oil. The highlighted metals show excess wear in the
upper end (chrome, iron) as well as the bearings (copper, lead). These readings may be attributed to the
track time as racing is harder on an engine than street driving. Or maybe something else is going on. Either
way, shorter oil changes might help. The trace of fuel is not a problem. No other contaminants found. Try
750-1,000 miles next time. Caution: poor wear!
REDLINE: The track events are one reason for the high iron, from steel parts. It's due to the stress the
engine endures. That's why it was good that you changed this oil to get rid of those excess metals. The high
lead is from leaded (racing) gasoline - not from bearings. Redline 20W/50 starts out with ~25 ppm of sodium
and ~12 ppm of silicon as additive plus a lot of moly. They may be using more sodium now given the
amount we found in your oil. That additive will mask sodium from coolant if your engine isn't air-cooled.
Suggest 500-mile oil changes to keep iron down.
rickdm
___________ BP ___ RL
ALUMINUM ___ 4___ 3
CHROMIUM ___ 5 ___ 2
IRON ___ 27 ___ 20
COPPER ___ 12 ___ 8
LEAD ___ 44 ___ 216
TIN ___ 0 ___ 0
MOLYBDENUM ___ 48 ___ 398
NICKEL ___ 2 ___ 3
MANGANESE ___ 0 ___ 0
SILVER ___ 1 ___ 0
TITANIUM ___ 0 ___ 0
POTASSIUM ___ 0 ___ 1
BORON ___ 14 ___ 65
SILICON ___ 9 ___ 13
SODIUM ___ 322 ___ 53
CALCIUM ___ 1658 ___ 2656
MAGNESIUM ___ 557 ___ 67
PHOSPHORUS ___ 1016 ___ 1329
ZINC ___ 1319 ___ 1550
BARIUM ___ 0 ___ 1
SUS Viscosity @ 210°F ___ 85.5 ___ 95.8
cSt Viscosity @ 100°C ___ 16.89___19.36
Flashpoint in °F ___ 385 ___ 410
BP:Thanks for the note about the track time. Universal averages show typical wear levels for a
Porsche 3.2L after about 2,800 (street) miles on the oil. The highlighted metals show excess wear in the
upper end (chrome, iron) as well as the bearings (copper, lead). These readings may be attributed to the
track time as racing is harder on an engine than street driving. Or maybe something else is going on. Either
way, shorter oil changes might help. The trace of fuel is not a problem. No other contaminants found. Try
750-1,000 miles next time. Caution: poor wear!
REDLINE: The track events are one reason for the high iron, from steel parts. It's due to the stress the
engine endures. That's why it was good that you changed this oil to get rid of those excess metals. The high
lead is from leaded (racing) gasoline - not from bearings. Redline 20W/50 starts out with ~25 ppm of sodium
and ~12 ppm of silicon as additive plus a lot of moly. They may be using more sodium now given the
amount we found in your oil. That additive will mask sodium from coolant if your engine isn't air-cooled.
Suggest 500-mile oil changes to keep iron down.
rickdm
