My dad's car. Oil was a 5 quart jug of M1 EP 5w30 plus 2 quarts of plain M1 5w30 because dad wasn't paying close attention to what he bought. Same AC filter the whole run, no make-up oil.
M1 10w30 8k / M1 EP 5w30 11.2k
....@21k miles / @ 32,200 miles
Aluminum......6..........4
Chromium......2..........1
Iron...........16.........11
Copper........6..........6
Lead...........3..........4
Tin.............2..........2
Molybdenum.78.........77
Nickel.........0..........0
Manganese..5..........5
Silver.........0..........0
Titanium.....0..........0
Potassium...3..........2
Boron.......107........92
Silion........18.........13
Sodium........7..........4
Calcium.....2891.......2496
Magnesium...20.........13
Phosphorus.801........688
Zinc..........902........808
Barium.......0..........0
Antifreeze..0%
Fuel....... Water......0%
Insolubles 0.4%
Sub Vis was 66.2, should be 56-63
Flashpoint was 420, should be >365
Blackstone says: You sort of blew the doors off oil use run on this sample, going up to 11,200 miles. Wear actually improved in most cases, though you got a slight uptick in lead, which comes from the bearings. Lead is not high enough to show a problem and even if you stay on at the same miles on the oil use next sample (we see no reason not to), lead may retreat a little. Silicon improved, which may explain the wear improvement, as some of the silicon is abrasive. No fuel, moisture, or anti-freeze found. Nice 32,200 mile engine. The viscosity was high.
My .02: This oil worked well. A Caddy OLM gives you the % of oil life left, and we ran it down to 4% this time. FYI, Northstar Caddys also hold 7.5 quarts of oil (I put in 7). Note also that Cadillac does not require synthetic for this particular engine.
[ November 22, 2005, 10:46 PM: Message edited by: JohnnyO ]
M1 10w30 8k / M1 EP 5w30 11.2k
....@21k miles / @ 32,200 miles
Aluminum......6..........4
Chromium......2..........1
Iron...........16.........11
Copper........6..........6
Lead...........3..........4
Tin.............2..........2
Molybdenum.78.........77
Nickel.........0..........0
Manganese..5..........5
Silver.........0..........0
Titanium.....0..........0
Potassium...3..........2
Boron.......107........92
Silion........18.........13
Sodium........7..........4
Calcium.....2891.......2496
Magnesium...20.........13
Phosphorus.801........688
Zinc..........902........808
Barium.......0..........0
Antifreeze..0%
Fuel....... Water......0%
Insolubles 0.4%
Sub Vis was 66.2, should be 56-63
Flashpoint was 420, should be >365
Blackstone says: You sort of blew the doors off oil use run on this sample, going up to 11,200 miles. Wear actually improved in most cases, though you got a slight uptick in lead, which comes from the bearings. Lead is not high enough to show a problem and even if you stay on at the same miles on the oil use next sample (we see no reason not to), lead may retreat a little. Silicon improved, which may explain the wear improvement, as some of the silicon is abrasive. No fuel, moisture, or anti-freeze found. Nice 32,200 mile engine. The viscosity was high.
My .02: This oil worked well. A Caddy OLM gives you the % of oil life left, and we ran it down to 4% this time. FYI, Northstar Caddys also hold 7.5 quarts of oil (I put in 7). Note also that Cadillac does not require synthetic for this particular engine.
[ November 22, 2005, 10:46 PM: Message edited by: JohnnyO ]
