Phillips 66 Lubricants
Hundreds of formulations across engine, gear, hydraulic and grease lines.
Heavy Duty Engine Oil
Diesel engine oils for on-highway trucks and off-road equipment.
Heavy duty engine oils are designed for diesel engines working under high loads, long operating hours, and demanding conditions. Formulations with strong wear, oxidation, and deposit control help protect engines and extend performance across trucks, heavy equipment, and industrial applications. Different viscosity grades and performance standards allow one oil to be matched to the requirements of different engines.
When choosing a heavy duty engine oil, consider the engine type, operating conditions, manufacturer specifications, required viscosity, and applicable API standards. We offer a variety of heavy duty engine oils in different viscosities and formulations for a range of diesel-powered equipment and vehicles.
Heavy Duty Engine Oil
19 productsMore Lubricants
16 types- Aviation Oil7 products
- Bar & Chain Oil7 products
- Compressor Oil37 products
- Gear Oil45 products
- Grease39 products
- Heavy Duty Engine Oil19 products
- Hydraulic Fluid29 products
- Multifunctional Fluid10 products
- Open Gear Lubricant13 products
- PCMO22 products
- R&O3 products
- Small Engine Oil5 products
- Specialty Lubricant35 products
- Transmission Fluid16 products
- Turbine Oil6 products
- Smoke Oil1 product
Our Suppliers
The brands behind our heavy duty engine oil
Phillips 66 Aviation
FAA-approved aviation engine oils, smoke oils and hydraulic fluids.
Summit Lubricants
Air and gas compression synthetics, including the food-grade line.
Not sure which one you need?
Tell us the equipment and the duty cycle and our Technical Services Group will come back with the right heavy duty engine oil — OEM approvals checked, alternatives cross-referenced.
Toll Free
1-855-880-7827Prince George
250-563-5823Coquitlam
604-941-7676Valemount
250-566-4818