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Monograde Heavy Duty Diesel Engine Oil

Heavy Duty Diesel Engine Oil

MAG 1® Monograde Heavy Duty Engine Oil is formulated to provide excellent protection for older engines. These engines have served you well for a long time and deserve high-quality oil protection that meets or exceeds the engine manufacturers’ recommendations.

Protection and Performance

Only the most advanced engine oils meet the difficult challenges of effectively balancing durability, extending drain intervals and protecting emissions control devices.

Excellent Quality and Protection

MAG 1® with FMX® Technology provides unsurpassed protection in every viscosity. FMX Technology creates a strong, durable and high-performing level of protection that controls friction and reduces metal-to-metal contact.  

Monograde Heavy Duty Diesel Engine Oil

MAG 1® SAE 10 Heavy Duty Diesel Engine Oil

For older diesel engines.

Product Details 
HDDEO Monograde SAE 10 Front
Monograde Heavy Duty Diesel Engine Oil

MAG 1® SAE 30 Heavy Duty Diesel Engine Oil

For older diesel engines.

Product Details 
HDDEO Monograde SAE 30 Front
Monograde Heavy Duty Diesel Engine Oil

MAG 1® SAE 40 Heavy Duty Diesel Engine Oil

For older diesel engines.

Product Details 
HDDEO Monograde SAE 40 Front
Monograde Heavy Duty Diesel Engine Oil

MAG 1® SAE 50 CF‑4 Heavy Duty Diesel Engine Oil

For older diesel engines.

Product Details 
HDDEO Monograde SAE 50 CF-4 Front
Monograde Heavy Duty Diesel Engine Oil

MAG 1® SAE 40 CF‑4 Heavy Duty Diesel Engine Oil

For older diesel engines.

Product Details 
HDDEO Monograde SAE 40 CF-4 Front