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Mammoth Petroleum

MAMMOTH PETROLEUM

778-370-3330

GUARDOL XT® FULL SYNTHETIC DIESEL ENGINE OIL

PREMIUM FULL-SYNTHETIC API CK-4 DIESEL ENGINE OIL; FORTIFIED WITH LIQUID TITANIUM® PROTECTION ADDITIVE

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ARCTIC-GRADE ENDURANCE: GUARDOL® XT® (FULL SYNTHETIC) 

Ultimate Temperature Mastery. Elite Full-Synthetic Protection.


Mammoth is proud to supply Phillips 66® Guardol XT, a premium full-synthetic engine oil engineered for four-stroke diesel engines operating under the most severe conditions and extreme temperature swings. Designed to exceed API CK-4 standards, this 100% synthetic formulation provides the ultimate shield for modern low-emission engines, ensuring peak performance in both blistering heat and harsh winter climates where conventional and blend oils reach their limits.


WHY MAMMOTH TRUSTS GUARDOL® XT:

  • Full-Synthetic Thermal Stability: Provides superior resistance to oxidation and thermal breakdown at high temperatures, ensuring the oil maintains its protective viscosity longer than any synthetic blend.

  • Extreme Cold-Start Performance: The advanced synthetic base ensures exceptional low-temperature pumpability, allowing for rapid lubrication and reduced wear during the most punishing cold-weather starts.

  • Liquid Titanium® Shield: Fortified with exclusive Liquid Titanium® additive technology, which creates a molecular-level sacrificial layer to protect critical engine components from abrasive wear.

  • Soot & Deposit Mastery: Features world-class soot dispersancy to prevent oil thickening and abrasive wear, keeping your DPF and SCR aftertreatment systems clean and operational.

PRODUCT RESOURCES 

PERFORMANCE

  • Full-Synthetic Mastery: Provides ultimate resistance to oxidation and thermal breakdown in both blistering heat and punishing cold.

  • Extreme Cold-Start Flow: Ensures rapid lubrication during harsh winter starts, protecting the engine when it is at its most vulnerable.

  • Liquid Titanium® Shield: Fortified with titanium technology to create a molecular-level shield against wear in the most severe service environments.

PROTECTION

  • Extreme Thermal Shield: Maintains a robust lubricating film at 100°C+ while remaining fluid and pumpable at -40°C.

  • Rapid Cold-Start Flow: Reaches critical top-end components in seconds during freezing weather, preventing the "dry start" wear that kills engines.

  • Ultimate Oxidation Control: 100% synthetic base stocks resist thickening under extreme heat, preventing oil starvation and sludge.

UPTIME

  • All-Weather Availability: Eliminates cold-weather downtime by ensuring the engine turns over and builds oil pressure instantly, even in sub-zero temperatures.

  • Maximum Service Life: The full-synthetic formulation resists the chemical breakdown that forces more frequent oil changes in conventional lubricants.

  • Turbo & Aftertreatment Safety: Superior heat resistance prevents oil "coking" in turbos, avoiding one of the most common causes of roadside breakdowns.

COMPOSITION
RESISTANCE
PROTECTION

FEATURES & BENEFITS

  • Extreme Temp Flow: Full-synthetic base ensures the oil reaches the turbo and valve train instantly in sub-zero startups.

  • High-Heat Durability: Maintains an impenetrable lubricating film during long, uphill hauls under maximum GVW.

  • Enhanced Fuel Economy: Reduced internal fluid friction leads to better MPG compared to conventional 15W-40 oils.

  • Extended Drain Potential: Outstanding chemical stability allows for maximum intervals between service stops.

  • Volatility Control: Significantly reduces oil consumption and top-off requirements in severe service.

APPLICATIONS

  • On-highway fleets operating in extreme climates (Mountain passes, Northern BC).

  • Severe-duty off-highway equipment in logging and heavy construction.

  • Modern diesel engines requiring a full-synthetic CK-4 for maximum protection.

  • Marine diesel engines operating in high-demand or variable-speed environments.

Licenses & Approvals:


Guardol XT is licensed or OEM-certified for:

  • API Service CK-4, CJ-4, SN

  • Cummins CES 20086

  • Mack EOS-4.5

  • Volvo VDS-4.5

  • Ford WSS-M2C171-F1

Guardol XT meets or exceeds the requirements of:

  • Caterpillar ECF-3, ECF-2

  • Detroit Diesel DFS 93K222

  • ACEA E9

  • Chrysler MS-10902

MAMMOTH TECHNICAL TIP:

For logging trucks or marine tenders working in variable BC conditions, the XT is unmatched. It flows instantly on a cold morning—which is when 90% of engine wear occurs—meaning your turbo gets pressurized oil the second you turn the key. It’s the ultimate "peace of mind" oil for mission-critical equipment.

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