Performance Engineered Lubricants - Since 1919
   
 




   
Diesel Engine Oils

diesel engine oil J-4 D-A's Reliant™ engine oil family has been designed specifically to meet the stringent requirements of API Service Category CK-4 and is backwards compatible for CJ-4 and earlier engines.

D-A Reliant CK-4 engine oils keep the D-A tradition alive with breakthrough ChemGuard™ technology giving your engines the protection they deserve from extreme operating conditions. American ingenuity has crossed the technology line again and has surpassed the demands of mechanical engineering. Customizing with narrow cut base stock reduces oil consumption in the high-temperature ring belt zone during peak operating times; it also contributes to excellent cold-crank ability for initial cold weather start- ups.

The exclusive additive package with active detergents (TBN) and dispersants keeps your engine free from excessive corrosive wear and soot loading caused by the diesel engine chemical combustion process. Coupled with our highly sheer stable polymers, the result is resistance to in-service viscosity loss and the capability to customize oil drain intervals.

D-A has always been The Long Drain Champion!
D-A diesel engine oil

D-A diesel engine oil is technologically-advanced with ChemGuard™ and specially formulated to stand up to all the hardships that your heavy-duty engine endures every day.

D-A makes a wide variety of diesel engine oil for every different engine type and size.

Click on the PDS or SDS link next to each product to see more information.


Reliant™ CK-4
D-A Reliant™ CK-4 Oil has been designed specifically to meet the stringent requirements of API Service Category CK-4 oils required for use in 2017 and later model diesel engines, and is backwards compatible to run in ultra-low sulphur diesel fuel and may be equipped with aftertreatment devices. Reliant™ CK-4 SAE 15W-40 and SAE 10W-30 are API Licensed. API Service Category: CK-4, as well as supporting the requirements of API CJ-4, CAT ECF-3; Cummins CES 20086; Detroit Diesel DFS93K222; Ford WSS M2C-171-F1; Mack EO-S 4.5; Volvo VDS-4.5 and others.
PDS | SDS
Reliant™ Premium CK-4
D-A Reliant™ Premium CK-4 Oil has been designed specifically to meet the stringent requirements of API Service Category CK-4 oils required for use in 2017 models as well as is backwards compatible to earlier model diesel engines which run on ultra-low sulphur diesel fuel and may be equipped with aftertreatment devices.  It has a 10 TBN rating, the highest in the industry. Reliant™ Premium CK-4 SAE 15W-40 and SAE 10W-30 are API Licensed. API Service Category: CK-4, as well as supporting the service requirements of API CJ-4, CAT ECF-3; Cummins CES 20086; Detroit Diesel DFS93K222; Mack EO-S 4.5; Volvo VDS-4.5 and others.

PDS | SDS
Reliant™ Monogrades
D-A Reliant™ Monogrades are a technologically-advanced heavy-duty diesel engine oils designed to provide extra protection against deposits and wear for engines operating in heavy duty service. D-A offers the following monograde viscosities: SAE 10W, SAE 30, SAE 40, SAE 50.

PDS | SDS
Reliant J-4™ FS, Full Synthetic
D-A Reliant J-4™ FS Full Synthetic SAE 5W-40 has been designed specifically to meet the stringent requirements of API Service Category CJ-4 oils required for use in 2007 and later model diesel engines which run on ultra-low sulphur diesel fuel and may be equipped with aftertreatment devices.  Reliant J-4 FS supports the performance requirements of CJ-4/SM, as well as CAT ECF-3, Cummins CES 20081, Detriot Diesel DDC 93K218, Volvo VDS-4, Mack EO-O Premium Plus.

PDS | SDS