This oil was run from 9/07 through the end of January in my old E30 BMW. I'd reckon this oil saw just about everything in terms of weather and driving conditions except midsummer heat. I tow frequently with this car, usually motorcycles, and the first half of the OCI saw many day trips through the mountains laden with trailer and bikes. Snow hasn't let up here since early December, so the second half was full of cold starts in single digits/teens and short trips. Purolator oil filter, Mann air filter.
Miles on oil: 6,166
Miles on unit: 288,907
Make up oil: None
Quantity in sample/Universal average:
Aluminum: 5/3
Chromium: 1/0
Iron: 14/11
Copper: 7/5
Lead: 4/3
Tin: 0/0
Molybdenum: 76
Nickel: 0/0
Manganese: 0/1
Silver: 0/0
Titanium: 0/0
Potassium: 2
Boron: 305
Silicon: 7/5
Sodium: 6
Calcium: 1,589
Magnesium: 365
Phosphorus: 1013
Zinc: 1269
Barium: 1
Sus Viscosity at 210F: 72.7
cSt Viscosity at 100C: 13.65
Fashpoint in F: 395
Fuel Percentage: Antifreeze: 0.0
Water: 0.0
Insolubles: 0.5
TBN: 2.6
Blackstone's comments: At 288,907 miles, your 325i is wearing a little more than most but we see no signs of and problems. If long oil runs are the norm, that would explain the above average wear. Universal averages are based on an oil run of 5,300 miles. We think you could run your oil a little longer but we suggest no more than 7,000 miles for now. The oil was in good shape physically, containing no moisture, fuel, or coolant. The air and oil filters are working well too. The TBN read 2.6 so you had some active additive remaining. We consider 1.0 too low for extended use.
By comments: I have changed the oil in this car every 4k until now but wanted a longer run to expose any weaknesses in the oil. This is the tenth consecutive run of Delo 15W-40. Correcting the wear numbers for mileage the wear is virtually identical to Blackstone's universal averages across the board. Si is nice and low at 7, though I might go back to Mahle oil filters to see if that improves the insolubles. Viscosity looks perfect and with the TBN I think I could do 7500 without worries.
I am curious about the new Delo LE formula. Seems like less moly than before, huge boron, but where's the calcium? Is Mg a substitute for Ca? More effective than Ca? I may have missed some threads on this oil but did not see a virgin analysis posted. Any consensus on whether it is as effective as the old Delo? This one meets SM and I wonder if it has given up any advantage with respect to pre-SM formulations.
Miles on oil: 6,166
Miles on unit: 288,907
Make up oil: None
Quantity in sample/Universal average:
Aluminum: 5/3
Chromium: 1/0
Iron: 14/11
Copper: 7/5
Lead: 4/3
Tin: 0/0
Molybdenum: 76
Nickel: 0/0
Manganese: 0/1
Silver: 0/0
Titanium: 0/0
Potassium: 2
Boron: 305
Silicon: 7/5
Sodium: 6
Calcium: 1,589
Magnesium: 365
Phosphorus: 1013
Zinc: 1269
Barium: 1
Sus Viscosity at 210F: 72.7
cSt Viscosity at 100C: 13.65
Fashpoint in F: 395
Fuel Percentage: Antifreeze: 0.0
Water: 0.0
Insolubles: 0.5
TBN: 2.6
Blackstone's comments: At 288,907 miles, your 325i is wearing a little more than most but we see no signs of and problems. If long oil runs are the norm, that would explain the above average wear. Universal averages are based on an oil run of 5,300 miles. We think you could run your oil a little longer but we suggest no more than 7,000 miles for now. The oil was in good shape physically, containing no moisture, fuel, or coolant. The air and oil filters are working well too. The TBN read 2.6 so you had some active additive remaining. We consider 1.0 too low for extended use.
By comments: I have changed the oil in this car every 4k until now but wanted a longer run to expose any weaknesses in the oil. This is the tenth consecutive run of Delo 15W-40. Correcting the wear numbers for mileage the wear is virtually identical to Blackstone's universal averages across the board. Si is nice and low at 7, though I might go back to Mahle oil filters to see if that improves the insolubles. Viscosity looks perfect and with the TBN I think I could do 7500 without worries.
I am curious about the new Delo LE formula. Seems like less moly than before, huge boron, but where's the calcium? Is Mg a substitute for Ca? More effective than Ca? I may have missed some threads on this oil but did not see a virgin analysis posted. Any consensus on whether it is as effective as the old Delo? This one meets SM and I wonder if it has given up any advantage with respect to pre-SM formulations.