MAMMOTH PETROLEUM
778-370-3330
PREMIUM AUTOMOTIVE PROTECTION: SHIELD® CLASSIC (CONVENTIONAL) Engineered for High-Output. Built for Stability.
Mammoth is proud to supply Phillips 66® Shield Classic, the premium conventional solution for engines requiring a heavier-viscosity oil. Specifically designed for high-temperature operations and older high-performance street or competition engines, this 20W-50 formulation provides a robust protective layer where thinner oils might fail. Whether you are maintaining a classic fleet or high-output equipment, Shield Classic delivers the specialized film strength needed for severe service and high-heat environments.
WHY MAMMOTH TRUSTS SHIELD® CLASSIC:
High-Temperature Film Strength: Specifically formulated for gasoline engines that prefer an SAE 20W-50 weight, providing superior lubrication and oil pressure stability in extreme heat or competition settings.
Comprehensive Wear Defense: Engineered to protect turbocharged direct injection and flex-fuel systems, offering a reliable shield against friction and engine wear under heavy-duty operational stress.
Sludge & Varnish Control: Our formulation actively resists the formation of internal deposits, keeping engines cleaner and ensuring that high-performance components remain free of sludge and varnish.
Thermal Breakdown Resistance: Built to withstand severe service without thinning out, this oil guards against rust, bearing corrosion, and foaming to ensure long-term engine health for specialized applications
PRODUCT RESOURCES
PERFORMANCE
High-Heat Stability: Specifically engineered for engines requiring a heavier 20W-50 weight, maintaining film strength in high-temperature environments.
Street & Track Reliability: Suitable for gasoline-fueled competition and high-performance street engines that demand a stable, high-viscosity oil.
Resistant to Foaming: Formulated to resist aeration and foaming, ensuring constant lubrication even in high-stress mechanical conditions.
PROTECTION
Robust Film Strength: Provides comprehensive wear protection for turbocharged and conventional gasoline engines operating under high-load or high-heat scenarios.
Internal Component Defense: Guards against bearing corrosion and rust, protecting critical internal parts during both operation and seasonal storage.
Sludge Prevention: Minimizes the formation of sludge and varnish to maintain internal engine cleanliness in high-output environments.
UPTIME
Stability in Severe Service: Resists thermal breakdown during prolonged periods of high-stress operation, keeping classic and performance engines running longer.
Specialized Fleet Care: Ideal for older high-performance assets that require a traditional 20W-50 weight to maintain optimal oil pressure and protection.
Proven Wear Defense: Minimizes metal-on-metal friction to extend the mechanical life of older or specialized engine designs.
COMPOSITION
RESISTANCE
PROTECTION
FEATURES & BENEFITS
LSPI Protection: Specifically formulated to help protect against low-speed pre-ignition in TGDI engines.
Thermal Endurance: Exceptional resistance to viscosity and thermal breakdown at high operating temperatures.
Sludge Defense: Advanced detergent package actively protects against the formation of sludge and varnish.
Bearing Guard: Fortified with inhibitors to protect against internal rust and critical bearing corrosion.
Foam Resistance: Engineered to maintain a stable lubricating film even under high-performance aeration.
APPLICATIONS
Turbocharged gasoline direct-injection (TGDI) and conventional gasoline-fueled light trucks and SUVs.
High-performance street engines and gasoline-fueled competition vehicles.
Older vehicles operating under high-temperature conditions or heavy towing.
Flex-fuel vehicles operating on ethanol-containing fuels up to E85.
Licenses & Approvals:
Shield Classic Motor Oil is licensed for:
API service SQ
Backward serviceable for use where API SP or earlier "S" category engine oils are recommended
MAMMOTH TECHNICAL TIP:
This is a high-viscosity powerhouse for older, high-mileage engines or classic flat-tappet designs. The 20W-50 grade provides a much thicker film strength than modern thin oils, which is essential for maintaining oil pressure and cushioning internal components in engines with larger mechanical clearances. It’s the professional choice for keeping vintage iron or hard-working older fleets running quiet and cool.