The 1998 Dodge Ram 2500 Cummins requires the correct oil type, oil capacity and oil filter for reliable performance and long-term engine protection. This guide includes recommended products and updated specifications for the Second Gen 5.9L 12-valve Cummins diesel equipped with the Bosch P7100 inline injection pump (P-Pump).
The 1998 Dodge Ram 2500 Cummins has an oil capacity of 11 quarts with filter, and Dodge recommends a heavy-duty 15W-40 diesel engine oil meeting the appropriate specifications. We have listed our recommended AMSOIL oil and filter options below.
This information is subject to change, so please visit our Product Lookup Guide for the most current oil and filter recommendations for your specific vehicle.
Looking for other model years? See:
The 1998 Dodge Ram 2500 Cummins has an oil capacity of 11 quarts with filter, and Dodge recommends a heavy-duty 15W-40 diesel engine oil meeting the appropriate specifications. We have listed our recommended AMSOIL oil and filter options below.
This information is subject to change, so please visit our Product Lookup Guide for the most current oil and filter recommendations for your specific vehicle.
Looking for other model years? See:
Specifications |
Details |
Year |
1998 |
Make |
Dodge |
Model |
Ram 2500 Cummins |
Engine |
5.9L 12-Valve Cummins Turbo Diesel |
Oil Type |
|
Oil Capacity |
11 quarts |
Oil Filter |
Recommended Synthetic Oil
 | AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil For the 1998 Dodge Ram 2500 Cummins, we recommend AMSOIL Signature Series 15W-40 Synthetic Diesel Oil. This premium heavy-duty diesel oil is engineered to provide outstanding protection against wear, soot, heat and turbocharger deposits in hard-working diesel trucks. Its advanced synthetic formula helps resist oil breakdown under heavy loads and high-temperature operating conditions while supporting long engine life and reliable turbocharger protection. View details > |
Recommended Oil Filter
 | AMSOIL EA080 Premium Oil Filter The AMSOIL EA080 oil filter is engineered for use in the 1998 Dodge Ram 2500 Cummins and helps provide excellent filtration efficiency for long engine life. Its premium filtration media helps capture dirt, soot and other contaminants commonly found in diesel engines while maintaining consistent oil flow under demanding operating conditions. Designed for extended service intervals, it complements AMSOIL Signature Series Synthetic Diesel Oil to help maintain clean oil and reliable engine protection. View details > |
Where to Buy
1. Order Online – Fast Delivery
Order online using the links above and receive your products delivered directly to your door. Shipping options, promotions and delivery times may vary, so please refer to the AMSOIL website for current details.
2. Become a Preferred Customer
Preferred Customers receive discounted pricing, earn reward points on qualifying purchases, receive exclusive promotions and more. Simply add a Preferred Customer membership to your cart when ordering to receive discounted pricing and other membership benefits.
Order online using the links above and receive your products delivered directly to your door. Shipping options, promotions and delivery times may vary, so please refer to the AMSOIL website for current details.
2. Become a Preferred Customer
Preferred Customers receive discounted pricing, earn reward points on qualifying purchases, receive exclusive promotions and more. Simply add a Preferred Customer membership to your cart when ordering to receive discounted pricing and other membership benefits.
