This is from a while back and everything seems to look ok, mostly posting it for others to see or to see if there appears to be something out of line.
I bought the car used and I don't know what oil it had in it, I drained it and filled the car with Mobil 1 EP 5W-30. On this sample I filled up three tanks with about 25% Ethanol in the fuel, two rally-x events and lots of driving in the mountains. Everything on the car is stock (after this oil sample I noticed that the air filter housing was only closed with 3 of the 4 tabs, might have been the cause of the higher silicon results. In 3 months I put 7232 miles on the oil and got these results...I have not had the chance to do another oil sample since.
Equipment Make: Subaru
Equipment Model: Impreza 2.5 RS 4-cyl
Oil Use Interval: 7,232 miles
Makeup Oil: None
Oil Type: Mobil 1 5W/30 EP (gas)
Miles on Unit: 52,535
Aluminum 2
Chromium 2
Iron 9
Copper 3
Lead 3
Tin 0
Moly 81
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 0
Boron 67
Silicon 16
Sodium 5
Calcium 2227
Magnesium 12
Phosphors 636
Zinc 781
Barium 0
Viscosity SUS @210dF
Should be 58-65
Tested 57.4
Flashpoint
Should be >385
Tested 370
Fuel Dilution
Should be Tested 0.8
No Antifreeze
No Water
Insolubles 0.2
BlackStone Comments: So long as your engine is approved for the E85 we doubt you will have any problems with it. We found a low flash point, which we normally attribute to gas contamination, but in this case, it may not be. We also found silicon a little high and that could be attributable to the E85 as well. It does not appear to be abrasive dirt getting past air filtration, but you may want to check the air intake filter system anyway. All wear was found at or better than universal average levels, which is remarkable considering your long oil use run. Average wear is based on 4,445 miles.
I bought the car used and I don't know what oil it had in it, I drained it and filled the car with Mobil 1 EP 5W-30. On this sample I filled up three tanks with about 25% Ethanol in the fuel, two rally-x events and lots of driving in the mountains. Everything on the car is stock (after this oil sample I noticed that the air filter housing was only closed with 3 of the 4 tabs, might have been the cause of the higher silicon results. In 3 months I put 7232 miles on the oil and got these results...I have not had the chance to do another oil sample since.
Equipment Make: Subaru
Equipment Model: Impreza 2.5 RS 4-cyl
Oil Use Interval: 7,232 miles
Makeup Oil: None
Oil Type: Mobil 1 5W/30 EP (gas)
Miles on Unit: 52,535
Aluminum 2
Chromium 2
Iron 9
Copper 3
Lead 3
Tin 0
Moly 81
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 0
Boron 67
Silicon 16
Sodium 5
Calcium 2227
Magnesium 12
Phosphors 636
Zinc 781
Barium 0
Viscosity SUS @210dF
Should be 58-65
Tested 57.4
Flashpoint
Should be >385
Tested 370
Fuel Dilution
Should be Tested 0.8
No Antifreeze
No Water
Insolubles 0.2
BlackStone Comments: So long as your engine is approved for the E85 we doubt you will have any problems with it. We found a low flash point, which we normally attribute to gas contamination, but in this case, it may not be. We also found silicon a little high and that could be attributable to the E85 as well. It does not appear to be abrasive dirt getting past air filtration, but you may want to check the air intake filter system anyway. All wear was found at or better than universal average levels, which is remarkable considering your long oil use run. Average wear is based on 4,445 miles.