Specs before brands
Each engine’s required category and approvals decide the oil.
Analyze to set drains
Oil analysis confirms whether intervals suit the duty cycle.
TRUCKS AND FLEET VEHICLES
Semi truck fluids and lubricants.
Diesel engine oil, drive axle and transmission lube, coolant, filters, and chassis grease for Class 8 tractors.
Questions: [email protected] · Every AMSOIL link on this page carries dealer #30734402.
Fluids by compartment.
Confirm the fluid type, grade, and specifications in the semi truck maker’s manual before ordering. These examples are not a fitment result for a specific machine.
Diesel engine
Match the API category, viscosity, and engine-maker approvals.
Diesel oil
Signature Series 15W-40 Max-Duty Diesel Oil
15W-40 Signature Series Max-Duty synthetic diesel oil for compatible diesel engines in demanding service.
Product details Shop at AMSOIL ↗
Diesel oil
Signature Series 5W-40 Max-Duty Diesel Oil
5W-40 Signature Series Max-Duty synthetic diesel oil for compatible diesel engines in demanding service.
Product details Shop at AMSOIL ↗
Diesel oil
15W-40 Heavy-Duty Diesel Oil
15W-40 Heavy-Duty synthetic diesel oil for compatible diesel engines in demanding service.
Product details Shop at AMSOIL ↗Drive axles and transmission
Axles and manual transmissions each list their lubricant and interval.
Gear oil
80W-140 Long Life Gear Lube
80W-140 Long Life Gear Lube for compatible differentials and gear assemblies.
Product details Shop at AMSOIL ↗
Commercial transmission fluids
SAE 50 Long Life Transmission Oil
SAE 50 Long Life Transmission Oil for compatible commercial drivetrain systems.
Product details Shop at AMSOIL ↗
Gear oil
SEVERE GEAR 75W-140 Gear Lube
SEVERE GEAR 75W-140 synthetic gear lube for compatible gear applications, including demanding towing and hauling use.
Product details Shop at AMSOIL ↗Cooling and filtration
Coolant chemistry and filter part numbers per the engine maker.
Coolant & additives
Heavy-Duty Antifreeze & Coolant
Antifreeze and coolant formulated for compatible heavy-duty cooling-system applications.
Product details Shop at AMSOIL ↗
Oil filters
Heavy-Duty Oil Filter
Heavy-Duty Oil Filter for the vehicle applications selected through AMSOIL’s fitment information.
Product details Shop at AMSOIL ↗
Bypass filtration systems
Universal Single-Remote Bypass System
Universal Single-Remote Bypass System for the listed bypass oil-filtration installations.
Product details Shop at AMSOIL ↗Chassis and fifth wheel
Grease chassis points and the fifth wheel.
Grease & assembly lube
NLGI #2 Synthetic Polymeric Truck, Chassis and Equipment Grease
NLGI #2 polymeric grease for compatible truck, chassis, and equipment components requiring this consistency grade.
Product details Shop at AMSOIL ↗
Grease & assembly lube
NLGI #1 Synthetic Polymeric Truck, Chassis and Equipment Grease
NLGI #1 polymeric grease for compatible truck, chassis, and equipment lubrication points under heavy loads.
Product details Shop at AMSOIL ↗ORDER THROUGH INDEPENDENT AMSOIL DEALER #30734402
Ready to order, or have a question first?
Shop AMSOIL directly with Jeff’s dealer number already attached, or open a business account. AMSOIL handles pricing, checkout, and shipping. If you contact AMSOIL another way, give them dealer number 30734402.
Prefer to talk it through? Email Jeff at [email protected] with your equipment, the fluid now in use, and your approximate volume.
Frequently asked questions
What oil does a semi truck use?
The category, viscosity, and approvals the engine maker specifies, commonly a 15W-40 or 10W-30 CK-4 oil.
How often should semi drive axle oil be changed?
At the axle maker’s interval for your duty.
General maintenance information. Always follow the equipment maker’s requirements and the current product data. Product availability, pricing, and account terms are set by AMSOIL.
Industries that use this equipment
More trucks and fleet vehicles
Open a commercial account with dealer #30734402
https://www.amsoil.com/business-opportunities/get-a-commercial-account/?zo=30734402
Jeff Pittman · A1 Synthetic Oil · Independent AMSOIL Dealer #30734402 · Newport, Washington · [email protected]