Heavy-Duty Truck Repairs

Truck Oil & Fluid Services in San Antonio & Austin, TX

Need an oil change? Our comprehensive oil and fluid services provide optimal vehicle performance and longevity. From transmission fluid flushes to heavy-duty oil changes, you can count on us to keep your trucks in top shape for the long road ahead.

Heavy-duty mechanic performing oil & fluid service on semi truck

Oil and Fluid Services

At Austin Fleet Services, we offer a wide range of oil and fluid services to keep your heavy-duty vehicles running strong. Here are some of the services we provide:

  • Oil Change: We offer professional oil change services using high-quality oil and filters, ensuring proper lubrication and protection for your truck's engine components.
  • Transmission Fluid Service: We provide transmission fluid flush and replacement services to maintain smooth shifting and prevent premature transmission wear.
  • Differential Fluid Service: We offer differential fluid change services to ensure proper lubrication and protection for your truck's differential gears and bearings.
  • Coolant Flush: We perform coolant flush services to remove old coolant and contaminants, preventing corrosion and ensuring efficient engine cooling.
  • Power Steering Fluid Service: We offer power steering fluid flush and replacement services to maintain smooth steering operation and prevent steering system damage.

Reach Out Today!

Ready to schedule oil and fluid services for your heavy-duty trucks? Contact us today at (737) 256-7770 to speak with our experienced team and ensure your fleet stays well-maintained and reliable. Trust Austin Fleet Services for all your oil and fluid service needs.

Areas We Serve

In addition to our locations in San Antonio and Austin, we offer services within a 50-mile radius of each shop, including the following areas in Texas: Pflugerville, San Marcos, Cedar Park, Round Rock, Georgetown, Elgin, New Braunfels, Schertz, Seguin, Devine, Pleasanton, Floresville, and many more. We offer expert mobile repairs and roadside assistance for those located in these areas.


How often should I get an oil change for my truck?

The frequency of oil changes depends on various factors such as vehicle age, mileage, and operating conditions. As a general guideline, heavy-duty trucks typically require oil changes every 10,000 to 15,000 miles or every six months to ensure optimal engine performance and longevity.

Is synthetic oil better for my vehicle?

Yes, synthetic oil offers several advantages over conventional oil, including better viscosity stability, improved resistance to breakdown under high temperatures, and enhanced protection against engine wear and deposits. It's especially beneficial for heavy-duty trucks subjected to demanding operating conditions.

How can I get in touch?

You can reach Austin Fleet Services by phone at (737) 256-7770. Our friendly and knowledgeable team is available to assist you with scheduling oil and fluid services or answering any questions you may have about our services.

Why Choose Austin Fleet Services?

We can come to you!
Our Patented Service Vehicles are specially designed and equipped to perform 85% of all vehicle maintenance and repair requirements on site.


Professional Light to Heavy-Duty Truck Repair Services

From axle repair to exhaust systems, diesel engines to transmissions, our technicians have the expertise to handle every repair job with precision and efficiency. Get in touch today for service in-shop in San Antonio & Austin, Texas. Or via mobile service in the surrounding areas.

Don't Take our word for it —
Read our reviews

"William is a awesome guy. He did a great job. Called about the tandem axle not sliding and helps me fixed some other little issue. I definitely recommend austin fleet services"

Jackson Epalle

"These guys are great, had an emergency with a DEF pump on a black Friday, only shop that picked up the phone, took my driver in immediately and didn't give me the runaround like most do now. I asked not to diagnose anything and just change the pump. Truck back on the road in 3-4 hours and saved us at least 3 days waiting for another shop to open. Definitely coming back here next time our  trucks are in the area!"

Vlad Supron

"Outstanding experience with AFS and George, their knowledgeable mechanic who replaced my valve cover gasket. My vehicle is running smoother than ever. Thank you AFS!"

Bianca Martinez

Contact Us

Get in touch with Austin Fleet Services today to schedule service in-shop in San Antonio or Austin/Pflugerville, or via mobile service in the surrounding areas.