Recently I picked up a Toro 340 XP mower, which came with an 18 oz bottle of Briggs & Stratton branded oil. Out of curiosity, I had to send a sample off for analysis (I used Rotella 30 wt in the mower). Here's what Blackstone says:
RON: This sample of Briggs & Stratton 30W oil had a viscosity in the high 20W-range. This shouldn't be a problem. No water or contamination was present in the sample. Insolubles were acceptably low at a trace level. The TBN of this sample is 9.8, and that's a fairly typical starting TBN for virgin motor oil. Calcium, boron, and magnesium perform a detergent/dispersant function, while the anti-wear additives come from phosphorus and zinc. This is serviceable oil.
MI/HR ON OIL:
MI/HR ON UNIT:
DATE: 5-19-09
ALUMINUM: 0
CHROMIUM: 0
IRON: 0
COPPER: 0
LEAD: 0
TIN: 0
MOLY: 18
NICKEL: 0
MANGANESE: 0
SILVER: 0
TITANIUM: 0
POTASSIUM: 1
BORON: 27
SILICON: 2
SODIUM: 1
CALCIUM: 2212
MAGNESIUM: 16
PHOSPHOROUS: 1045
ZINC: 1164
BARIUM: 0
SUS VISC. @210F: 58.5
Cst Visc. @100C: 9.80
Flashpoint: 425
Fuel %: —
Antifreeze %: —
Water %: 0.0
Insolubles %: TR
TBN:9.8
TAN:
ISO Code:
RON: This sample of Briggs & Stratton 30W oil had a viscosity in the high 20W-range. This shouldn't be a problem. No water or contamination was present in the sample. Insolubles were acceptably low at a trace level. The TBN of this sample is 9.8, and that's a fairly typical starting TBN for virgin motor oil. Calcium, boron, and magnesium perform a detergent/dispersant function, while the anti-wear additives come from phosphorus and zinc. This is serviceable oil.
MI/HR ON OIL:
MI/HR ON UNIT:
DATE: 5-19-09
ALUMINUM: 0
CHROMIUM: 0
IRON: 0
COPPER: 0
LEAD: 0
TIN: 0
MOLY: 18
NICKEL: 0
MANGANESE: 0
SILVER: 0
TITANIUM: 0
POTASSIUM: 1
BORON: 27
SILICON: 2
SODIUM: 1
CALCIUM: 2212
MAGNESIUM: 16
PHOSPHOROUS: 1045
ZINC: 1164
BARIUM: 0
SUS VISC. @210F: 58.5
Cst Visc. @100C: 9.80
Flashpoint: 425
Fuel %: —
Antifreeze %: —
Water %: 0.0
Insolubles %: TR
TBN:9.8
TAN:
ISO Code: