Full Synthetic Diesel Engine Oil  

CountryMark Advantage™ Full Synthetic Heavy Duty Diesel Engine Oil is engineered for hard-working diesel engines. This unique formulation offers outstanding wear protection, oil consumption control and extended-drain technology. Available in SAE 5W40 

Key Features

Extended Drain: Designed with advanced technology which extends oil drain intervals, improves soot control, provides faster lubrication during cold starts and maximizes total engine performance. 

Improved Fuel Economy: Delivers greater than 2 percent fuel economy over conventional oils under all driving conditions.

Additive Technology: Delivers exceptional low-temperature flow properties, oxidation stability, viscosity retention and deposit control helping to enhance engine protection. Superior additive technology also provides added varnish and sludge protection to keep engines clean by minimizing deposit formation and significantly better soot handling capability than other oils.

 

Synthetic Blend Diesel Engine Oil



CountryMark Advantage™ Synthetic Blend Heavy Duty Diesel Engine Oil is uniquely formulated to offer better performance than API CJ-4 lubricants and it is designed to help meet latest government regulations requiring improved fuel efficiency performance plus it provides enhanced protection against viscosity loss due to shear and improved oil aeration. 
This distinctive formulation offers outstanding wear protection, oil consumption control and extended-drain technology. Available in SAE 10W30.

Key Features

Exceptional Wear Protection: Minimizes soot-related abrasive wear and offers outstanding cylinder, bearing and wear results. Enhanced soot control reduces engine wear and extends engine life.

Enhanced Performance and Extended Drain: Designed with advanced technology which extends oil drain intervals, improves soot control, provides faster lubrication during cold starts, and maximizes engine performance.

Exceptional Properties: Improved oxidation protection and aeration control. Outstanding cross-head and injector screw weight loss and exceptional bore polish and cylinder wear results. 

Heavy Duty Diesel Engine Oil



CountryMark Advantage™ Heavy Duty Diesel Engine Oil is engineered for hard-working diesel engines and offers better performance than API CJ-4 lubricants. It is formulated to help meet latest government regulations requiring improved fuel efficiency performance plus it provides enhanced protection against viscosity loss due to shear and improved oil aeration. This consistent formulation offers outstanding wear protection, oil consumption control and extended-drain technology. Available in SAE 15W40

Key Features

Exceptional Wear Protection: Minimizes soot-related abrasive wear and offers outstanding cylinder, bearing and ring wear results. 

Enhanced Performance and Extended Drain: Designed with advanced technology which extends oil drain intervals, improves soot control, provides faster lubrication during cold starts, and maximizes engine performance. 

Exceptional Properties: Improved oxidation protection and aeration control. Outstanding cross-head and injector screw weight loss and exceptional bore polish and cylinder wear results.


 

CountryMark's Fueling Freedom raises more than $55,000 for local military families
CountryMark's Fueling Freedom events on June 30 raised over $55,000 to support local National Guard Solider and Family Readiness Groups (SFRG) and United Service Organizations (USO). During Fueling Freedom, 35 CountryMark-branded fueling stations donated 50 cents to organizations with a mission of supporting local military families for every gallon of fuel sold.
 
CountryMark fuel stations to raise money for local military families through Fueling Freedom program
When you fill up at a participating CountryMark fuel station on Friday, June 28 between noon and 5pm, CountryMark and its branded dealers will donate 50 cents for every gallon of fuel sold local organizations with a mission of supporting local military families.
 
CountryMark Sponsors New Expo Pavilion Coming to Posey County Fairgrounds
The Posey County Fair Association along with major sponsor CountryMark announced today plans to construct an expo pavilion that organizers believe will exceed community expectations.
 
CountryMark’s Mt. Vernon Refinery earns EPA’s ENERGY STAR® Certification
The U.S. Environmental Protection Agency (EPA) has recognized CountryMark’s Mt. Vernon, Indiana refinery as an ENERGY STAR® certified facility for 2023.
 
CountryMark Announces Ada Cuadrado as VP of Operations
INDIANAPOLIS, December 4, 2023 -- CountryMark recently named Ada Cuadrado as vice president of operations leading the company's refining, project management, regulatory and safety organizations.
 
 

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