708-500-5281 
Keeping a heavy-duty engine healthy starts with the right oil and consistent service. West 66 provides fast, reliable oil changes for commercial trucks using Mobil Delvac, a proven choice for heavy-duty diesel engines trusted across the industry.
Oil Change & Preventive Maintenance
Engines We Service
We provide complete oil service for major diesel engine platforms, including:
Engines
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Volvo – D12, D13, D90
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Detroit Diesel – Series 60, DD13, DD15
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Cummins – N14, ISX, ISX15, X15
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Paccar – MX-13, MX-11
Why Regular Oil Changes Matter
Dirty or degraded oil can lead to:
- Excessive engine wear
- Poor fuel economy
- Overheating
- Premature engine failure
Routine oil service helps protect internal engine components, improve reliability, and support longer engine life, especially for trucks running heavy loads, long routes, and demanding conditions.
What’s Included in Our Oil Change Service
Our complete oil service includes:
- Full oil drain and refill with Mobil Delvac
- Replacement of oil and fuel filters
- Full Vehicle Grease
- Inspection for leaks and early signs of engine problems
How the Process Works
From the first inspection to the final check, we follow a clear, efficient process built to reduce downtime and get your truck back on the road faster.
Process steps
- Initial inspection and assessment
- Clear explanation and work approval
- Professional service completion
- Quality check and safety review
- Ready for pickup and back on the road
Recommended Service Intervals
Most heavy-duty trucks benefit from oil changes every 15,000 to 25,000 miles, depending on engine type, load, route, and operating conditions. Ask us about the right interval for your truck or fleet.
Schedule Your Oil Change Today
Help your truck run stronger for longer with oil service built for heavy-duty use. Call today to schedule your oil change.
Why choose West 66
OEM-spec oil & premium filters
Clean, professional service bays
Multi-point inspection included
Certified heavy-duty diesel technicians
Frequently asked questions
Most heavy-duty trucks need an oil change about every 15,000 to 25,000 miles, depending on engine type, load, route, and operating conditions. Trucks running harder, hauling heavier loads, or driving longer distances may need service sooner to protect engine life.
High-quality oil helps protect internal engine components from heat, friction, soot, and wear. In heavy-duty diesel applications, the right oil supports better reliability, cleaner performance, and longer service life, especially when trucks are running hard, hauling weight, or covering long miles.
Our oil change service includes a full oil drain and refill with Mobil Delvac, replacement of oil and fuel filters, full vehicle grease, and an inspection for leaks or early warning signs that could point to larger engine issues.
Yes. West 66 provides fleet-ready oil service designed for consistency, speed, and reduced downtime. Whether you run a few trucks or manage a larger operation, the shop is set up to keep preventive maintenance efficient, organized, and easier to schedule.
Waiting too long can cause oil to break down and lose its ability to protect the engine properly. That can lead to more wear, reduced fuel economy, overheating, and a higher risk of expensive engine problems that could have been prevented earlier.
Testimonials What Our Customers Say
Contact Us
Have a question or need a quick quote? Send your truck or trailer make, model, year, and a description of the issue, and we’ll get back to you as soon as possible.
Contact Information:
Phone:
708-500-5281
Email:
[email protected]
Location:
Address
198 W Laraway Rd, Joliet, IL 60436, United States
Opening Hours:
Mon – Fri:
7:00 AM – 5:00 PM
Saturday:
7:00 AM – 12:00 PM
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