MAMMOTH PETROLEUM
778-370-3330
Phillips 66 Engine Oils
From high-output commercial diesels to precision-engineered passenger cars, Mammoth Petroleum provides the full spectrum of Phillips 66® engine oils designed for unyielding performance. We provide a powerhouse collection of lubricants to ensure that whether you are hauling maximum GVW over a mountain pass or navigating the daily commute, your engine is shielded by industry-leading film strength.
By utilizing advanced synthetic blends and exclusive Liquid Titanium® technology, our lubricants go beyond standard protection—they actively reduce internal friction, maximize fuel economy, and eliminate the soot and sludge that lead to downtime. Whether you need the "Fuel Economy" efficiency of modern synthetic lines or the high-viscosity durability required for aging iron, we have the specialized chemistry to keep your entire inventory running cooler, cleaner, and longer.
SHIELD® ARMOR
PREMIUM FULL-SYNTHETIC PASSENGER CAR ENGINE OIL
SHIELD® CHOICE
PREMIUM SYNTHETIC BLEND PASSENGER CAR ENGINE OIL
SHIELD® CLASSIC
CONVENTIONAL PASSENGER CAR ENGINE OIL
SHIELD® DEFENSE
SYNTHETIC BLEND PASSENGER CAR ENGINE OIL FOR HIGH MILEAGE VEHICLES; BLENDED WITH HIGH MILEAGE BOOSTER
SHIELD® EURO-TECH+
PREMIUM FULL-SYNTHETIC PASSENGER CAR ENGINE OIL FOR DIESEL POWERED EUROPEAN & NORTH AMERICAN VEHICLES
SHIELD® FIREBIRD
PASSENGER CAR ENGINE OIL FORMULATED WITH 70% OR GREATER
RE-REFINED BASE STOCKS
SHIELD® VALOR
PREMIUM FULL-SYNTHETIC PASSENGER CAR ENGINE OIL
SHIELD® EURO-TECH
PREMIUM FULL-SYNTHETIC PASSENGER CAR ENGINE OIL FOR EUROPEAN & NORTH AMERICAN VEHICLES
GUARDOL TT® DIESEL ENGINE OIL
HEAVY DUTY DIESEL ENGINE OIL
GUARDOL ECT® SYNTHETIC BLEND DIESEL ENGINE OIL
PREMIUM SYNTHETIC BLEND API CK-4 DIESEL ENGINE OIL; FORTIFIED WITH LIQUID TITANIUM PROTECTION ADDITIVE
GUARDOL® NG-D
PREMIUM SYNTHETIC BLEND ENGINE OIL FOR VEHICULAR NATURAL GAS AND DIESEL APPLICATIONS
POWER-D® ENGINE OIL
PREMIUM UNIVERSAL FLEET ENGINE OIL
T5X® HEAVY DUTY DIESEL ENGINE OIL
HEAVY-DUTY MONOGRADE DIESEL ENGINE OIL
GUARDOL ECO® DIESEL ENGINE OIL
API CK-4 DIESEL ENGINE OIL FORMULATED WITH RE-REFINED BASE STOCKS
POWER-D® ENGINE OIL 15W-50
PREMIUM UNIVERSAL FLEET ENGINE OIL
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GUARDOL XT® FULL SYNTHETIC DIESEL ENGINE OIL
PREMIUM FULL-SYNTHETIC API CK-4 DIESEL ENGINE OIL; FORTIFIED WITH LIQUID TITANIUM® PROTECTION ADDITIVE
GUARDOL FE® SYNTHETIC BLEND DIESEL ENGINE OIL
PREMIUM SYNTHETIC BLEND API FA-4 DIESEL ENGINE OIL; FORMULATED FOR FUEL ECONOMY
RAMAR® DIESEL XDO
RAILROAD LOCOMOTIVE & MARINE DIESEL ENGINE OIL
GUARDOL FLEET EC® DIESEL ENGINE OIL
API CK-4 SYNTHETIC BLEND DIESEL ENGINE OIL FOR LOW-EMISSION ENGINES
GUARDOL EURO® FULL SYNTHETIC DIESEL ENGINE OIL
PREMIUM FULL SYNTHETIC API CK-4 DIESEL ENGINE OIL
