Routine oil and fluid services are the easiest way to extend the life of your diesel truck. From oil changes and coolant flushes to transmission and brake fluid service, we keep your systems clean and efficient.

Oil and Fluid Services in Moses Lake, WA
Fluids are the lifeblood of your diesel truck—and without proper maintenance, breakdowns are inevitable. At 509 Roadside, we provide complete oil and fluid services for trucks, RVs, trailers, buses, and heavy equipment. Whether you’re due for an oil change or need a full system flush, we’ve got you covered.
Common oil and fluid services include:
- Semi truck oil changes
- Transmission and gear oil changes
- Coolant flush and refill
- Power steering and brake fluid service
- Fluid leak inspections and top-offs
What Makes Us Different
We handle fluid service for a wide range of commercial vehicles, using high-quality products that meet OEM specs. Every job is completed with care to prevent wear and avoid costly failures.
- In-shop service for trucks, RVs, trailers, buses, and fleets
- Roadside assistance available during business hours
- Honest timelines and transparent estimates
Need us on the road? Our mobile service team can assist during weekdays for breakdowns and scheduled on-site repairs. If you’re stuck and need help, 509 Roadside has you covered with 24/7 roadside assistance.
FAQs
How Can I Get Oil and Fluid Services?
Call 509-855-4932 to book your service today. Whether you need a quick oil change or a full fluid inspection, we’ll take care of it with speed and precision.
What Fluids Should I Service Regularly?
Engine oil, coolant, transmission fluid, brake fluid, and power steering fluid should all be checked regularly. Replacing them on schedule protects your truck from wear and overheating.
How Often Should I Change My Truck’s Oil?
Oil change intervals vary by engine type and usage, but most trucks benefit from a change every 10,000 to 25,000 miles. Frequent short hauls or extreme loads may shorten that range.
What Areas Do You Serve for Oil & Fluid?
We’re located at 11969 Debonair Street Northeast, Moses Lake, WA. We also proudly serve Spokane, WA; Kennewick, WA; Pasco, WA; Richland, WA; Yakima, WA; Wenatchee, WA; and Ellensburg, WA.
Schedule Your Oil Service Now: Call 509-855-4932!
Don’t skip routine maintenance—call 509-855-4932 now to schedule your oil or fluid service and keep your truck running smoothly.
What They're
Saying About Us
See why our customers consider 509 Roadside their go-to repair shop in Moses Lake, WA and the surrounding areas!
These guys got me in to their shop on short notice and found my electrical problem quickly. Can’t thank them enough! I will call them again if I need help in the area!!
Our resident transport bus broke down on the way back from Wenatchee. 509 Roadside made arrangements to get the vehicle towed to the shop and had it fixed the very next day. Great service!
Joseph helped me out when my car couldn’t shift gears coming from Spokane, going back to Western WA. It was 99 degrees out and he came from his house to help me. He was calm, knowledgeable, communicated well, and honest. He even called me when I got back home to make sure I made it and gave me some car tips. There aren’t too many people out there like him. I believe in karma, and Joseph deserves all the best karma his way.
My car broke down and Joe found me stranded. He called a tow truck immediately and waited with me, I told him I thought my alternator burned out and he confirmed that was the case as soon as he walked up. He had the car fixed first thing in the morning and his rate was very reasonable. Joseph is a great person and an amazing mechanic. I highly recommend his services.
I can’t speak highly enough of the service I received from 509 Roadside. My F150 was throwing multiple error codes and knocking, and eventually stranded me off I90 on a Sunday afternoon. Joseph with 509 was extremely patient and attentive, and helped walk me through problem solving over the phone, and I was able to get back on the road. (For a bit, but that’s the truck’s fault and not theirs!) Five stars, and I’d give more if I could.
Joseph did a great job replacing a small engine for us. He searched, bought and replaced it for us while keeping us informed every step of the way. With great pricing and service, we will continue to utilize him in the future for our needs.
509 Roadside is amazing. I was driving my truck and was in the area with an airbag broken on my trailer. I called 7 different shops within 100 miles of Moses lake around 1pm on a Thursday 3/13/25 and 509 was the only one to answer. Not only did they answer but they took the time to find the correct airbag and get me safely back on the road at a very reasonable price! It was a great experience and I will definitely be using their services again if I’m ever in need.
509 Roadside saved my day. I locked my keys in my trunk and called insurance to have them help connect me with someone to get into my car. I was waiting for the maintenance truck to come, 2.5 hours after my call. 509 Roadside was just driving by and helped. Super nice guy!
Contact 509 Roadside
Need roadside assistance, have questions, or want to schedule your truck or trailer in for a service or repair? Get in touch!