4T Semi-Synthetic MB

Part-SyntheticEngine Oil for 4-Stroke Cycle Motorcycles, Scooters & ATVs

Phillips 66®4T Semi-Synthetic MB is a premium quality, part-synthetic engine oil designed primarily for use in 4-stroke cycle motorcycles, scooters, and all-terrain vehicles (ATVs). It also may be used as transmission oil in motorcycles and ATVs where the manufacturer specifies the use of motor oil in the transmission.

Features & Benefits

• Enhanced resistance to viscosity and thermal breakdown at high temperatures

• Protects against sludge and varnish formation

• Protects against scuffing and wear

• High shear stability

• Protects against rust and bearing corrosion

• Good resistance to foaming and air entrainment


• 4-stroke cycle motorcycles, scooters, and ATVs

• 4-stroke cycle gasoline engines in other mobile or stationary equipment where an API Service SL quality oil is specified

Technical Details

Licenses & Approvals

4T Semi-Synthetic MB meets or exceeds the requirements of and is approved for:

• JASO T 903:2011 Performance Classification MB

Additional Details
SAE Grade10W-30
Specific Gravity @ 60°F0.868
Density, lbs/gal @ 60°F7.23
Color, ASTM D15003.5
Flash Point (COC), °C (°F)236 (457)
Pour Point, °C (°F)-41 (-41)
Viscosity, Kinematic
cSt @ 40°C68.2
cSt @ 100°C10.4
Viscosity Index139
Cold Cranking Viscosity, cP5500
High-Temp/High-Shear Viscosity, cP @ 150°C3
Sulfated Ash, ASTM D874, wt %1
Total Base Number (TBN), ASTM D28967.6
Phosphorus, wt %0.1
Zinc, wt %0.11