Heavy-Duty Truck Oil & Fluid in Dubuque, IA

Dirty oil, low fluid levels, and neglected filters can grind your operations to a halt. Our heavy-duty oil and fluid services catch the damage before it starts, keeping your truck cooler, faster, and fuel-efficient.

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Truck Fluid Service in Dubuque, IA

If your truck isn’t serviced regularly, you’re risking far more than dirty oil. Our truck fluid services cover everything that keeps your truck running smoothly—from oil changes to full system flushes. Fluids break down over time, lose viscosity, and allow dirt, metal, and moisture to accumulate. Ignoring fluid changes leads to poor lubrication, overheating, premature wear, and expensive repairs.

We service and replace:

  • Engine oil and oil filters
  • Transmission fluid and gear oil
  • Differential fluids and hub oils
  • Coolant/antifreeze
  • Power steering and brake fluids
  • Fuel filters and water separators

Whether you need a quick oil change or a complete fluid system inspection, we make sure your truck’s systems stay protected and performing at their best.

Experience the Guys Truck and Tractor Difference!

You’ve got routes to run and deadlines to meet. We make sure your truck’s fluids aren’t the reason you’re stuck in a bay.

Two Fully Equipped Locations: Visit our Kieler, WI, or Galena, IL, shops for quick, reliable fluid and oil service no matter what your route looks like.

22 Service Bays: Our high-capacity shops keep your downtime low—even if you're bringing in multiple trucks or full fleets.

Nearly 40 Years of Experience: Since 1977, we’ve built our reputation on smart maintenance and precision service that keeps engines, transmissions, and drivetrains alive longer.

Workmanship and Parts Warranties: Our labor is covered for 6 months, and we use top-grade oils, fluids, and OEM filters to protect your investment.

Contact Us About Semi Truck Oil Change & Fluid Service Now: Call 608-568-3257!

Don’t let neglected fluids sideline your rig. Call 608-568-3257 to schedule your truck oil change & fluid service today. We’ll handle everything from drain to top-off—fast, clean, and done right.

FAQs

What Areas Do You Serve For Heavy-Duty Oil & Fluid Services?

****Kieler, WI Location: 3405 County Road HHH, Kieler, WI 53812 – Call us at 608-568-3257****

We proudly serve: Dubuque, IA; Platteville, WI; Monroe, WI; Freeport, IL; Madison, WI; Waunakee, WI; Middleton, WI; Fitchburg, WI; Hazel Green, WI; Dickeyville, WI; Cuba City, WI; and Benton, WI.

****Galena, IL Location: 11521 AJ Harle Dr, Galena, IL – Call us at 815-777-3257****

We offer our services in the following areas: Dubuque, IA; Freeport, IL; Clinton, IA; Sterling, IL; Rock Falls, IL; Moline, IL; Rock Island, IL; Platteville, WI; Monroe, WI; East Dubuque, IL; Hazel Green, WI; Stockton, IL; Elizabeth, IL; Apple River, IL; Hanover, IL; and Warren, IL.

What Fluids Should Be Replaced Regularly in a Heavy-Duty Truck?

Fluids that should be replaced regularly in heavy-duty trucks include engine oil, coolant, transmission fluid, differential oil, brake fluid, power steering fluid, and windshield washer fluid. Replacement intervals vary by manufacturer and usage but are essential for maintaining performance, safety, and component longevity.

How Do You Know When Transmission Fluid Needs Changing?

Signs transmission fluid needs changing in heavy-duty diesel vehicles include dark or burnt-smelling fluid, delayed shifting, slipping gears, or overheating. Regular inspections and fluid analysis can also indicate wear or contamination. Follow manufacturer guidelines for intervals, especially under heavy loads or severe operating conditions.

How Can I Get Heavy-Duty Oil & Fluid Service?

Just call 608-568-3257. We’ll get your oil and fluid service done quickly, cleanly, and with top-tier products, so you can keep your fleet moving without issues. Don't settle for second best—book your service today!

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REPAIRS

Our Heavy-Duty Truck Repair Services

When something breaks, you need it fixed fast and fixed right. Our heavy-duty repairs cover everything from engines, brakes, and axles to driveline, suspension, and alignment work

With decades of diesel expertise, state-of-the-art diagnostics, and a team that keeps you informed with every step of the journey, you’ll get back on the road with confidence. We back all workmanship with a 6-month warranty, so there’s no guesswork; just results.

Whether it’s a quick fix or a full rebuild, we’ve got you covered!

REVIEWS

Testimonials

Here's what our customers are saying, feel free to leave us a review!

Edward Toma

No other shop was willing to work on my wrecker.I need it the whole under lift manufactured and Aron did an amazing job. I can’t thank them enough. It was worth the drive about 500 miles from Michigan. Fair prices and amazing work .
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These guys are great! My loaded down Chevy Silverado blew a tire while on my way back home to Iowa from Milwaukee. I was in a dangerous situation on the highway.
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Great service. Quick and amazing to work with. Couldn't have found a better shop to do business with, has been an amazing experience. These guys here actually listen to you and your wants and gets the job done.
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Galena Location
Kieler Location