AMSOIL recently updated the Vehicle Lookup Guide to include the 2025 Ram HD trucks with the 6.7L Cummins diesel engine. Included in this update is the oil type, oil filter, oil change interval and oil capacity information
The below information is subject to change so be sure to visit our Product Lookup Guide to see the most current product recommendations for your 2025 6.7L Cummins
The below information is subject to change so be sure to visit our Product Lookup Guide to see the most current product recommendations for your 2025 6.7L Cummins
ENGINE OIL
Viscosity
10W-30 (Above -18°C)
5W-40 (Below -18°C)
Oil Grade
SEO39
Oil Capacity
12 quarts (with filter). After filling, start the engine and idle for several minutes. Check for leaks. Stop the engine. Wait 30 minutes to allow the oil to drain back into the pan and check the level again.
Oil Drain Plug Torque
37 ft/lbs
Viscosity
10W-30 (Above -18°C)
5W-40 (Below -18°C)
Oil Grade
SEO39
Oil Capacity
12 quarts (with filter). After filling, start the engine and idle for several minutes. Check for leaks. Stop the engine. Wait 30 minutes to allow the oil to drain back into the pan and check the level again.
Oil Drain Plug Torque
37 ft/lbs
RECOMMENDED PREMIUM 100% SYNTHETIC MOTOR OIL
 | AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil
View details > |
RECOMMENDED HEAVY DUTY 100% SYNTHETIC MOTOR OIL
 | AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil
View details > |
WHERE TO BUY
1. Shop Online and Get Fast, Free Delivery
Shop online and get your products in 3 business days or less. With free shipping on most orders, and discounts for Preferred Customers (an average 25% savings), shopping online is the fastest way to get AMSOIL products to your doorstep. Becoming a Preferred Customer earns you discounts, points on purchases and more. Simply shop our online store and add a P.C. membership to your cart before checking out. You will receive an immediate discount on products for your 2025 RAM HD Diesel Truck
2. Buy Wholesale
In addition to the Preferred Customer Program for individuals, we offer wholesale programs for commercial businesses that want to use AMSOIL products in their company vehicles and equipment along with wholesale programs for re-sellers, dealers and installers. Learn more about all AMSOIL wholesale program
1. Shop Online and Get Fast, Free Delivery
Shop online and get your products in 3 business days or less. With free shipping on most orders, and discounts for Preferred Customers (an average 25% savings), shopping online is the fastest way to get AMSOIL products to your doorstep. Becoming a Preferred Customer earns you discounts, points on purchases and more. Simply shop our online store and add a P.C. membership to your cart before checking out. You will receive an immediate discount on products for your 2025 RAM HD Diesel Truck
2. Buy Wholesale
In addition to the Preferred Customer Program for individuals, we offer wholesale programs for commercial businesses that want to use AMSOIL products in their company vehicles and equipment along with wholesale programs for re-sellers, dealers and installers. Learn more about all AMSOIL wholesale program