Diesel mechanic performing oil & fluid services on semi truck fleet in Texas
Truck repair services

Truck Oil & Fluid Services in Texas

Providing Service in Houston, Dallas, San Antonio, Austin & More!

When it comes to fleet, heavy-duty, medium-duty, and light-duty trucks, maintaining proper oil and fluid levels is crucial for optimal performance and longevity. At OTR Fleet Service, we provide professional oil and fluid services tailored specifically to these vehicles.

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Oil & Fluid Inspections 

Our skilled technicians at OTR Fleet Service can assist you with comprehensive oil and fluid inspections for your trucks. We meticulously check the levels and conditions of various fluids, including engine oil, transmission fluid, hydraulic fluid, and coolant. Through these thorough inspections, we can identify any signs of contamination, fluid degradation, or leaks, ensuring the integrity of your trucks' vital fluids.

Oil & Fluid Changes 

Regular oil and fluid changes are essential to keep your trucks running smoothly. At OTR Fleet Service, we offer high-quality oil and fluid changes using industry-standard techniques and fluids. Our experienced team is well-versed in the specific requirements of different types of trucks, ensuring that the correct oil viscosity, fluid type, and capacity are used during the service. By maintaining clean and fresh fluids, we help optimize the performance and longevity of your trucks' engines and systems.

Additional Fluid Services 

In addition to oil changes, our comprehensive fluid services cover other vital components of your trucks. Our expert team can perform the following services:

  • Transmission Fluid Service: We inspect and replace transmission fluid, ensuring smooth gear shifts and optimal transmission performance.
  • Hydraulic Fluid Service: We check and replace hydraulic fluid, which is essential for the proper functioning of hydraulic systems in your trucks.
  • Coolant System Service: We perform coolant inspections and flushes to maintain the ideal temperature range of your trucks' engines, preventing overheating and potential engine damage.

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Proper oil and fluid maintenance is crucial for the reliable operation of your fleet, heavy-duty, medium-duty, and light-duty trucks. Trust OTR Fleet Service to keep your trucks running smoothly with our professional oil and fluid services. Contact us today to schedule an appointment or learn more about our comprehensive services for your trucks.

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Our Heavy-Duty Truck Repair Services

With service locations throughout Texas in Houston, Dallas, San Antonio, & Austin, OTR Fleet Service delivers industry-leading heavy-duty truck repair & fleet maintenance services from experienced diesel mechanics. Whether you require basic truck repair to complex diesel engine maintenance, we have the capability to get your vehicle back on the road and running smoothly.

Diesel mechanic performing axle repairs on semi-truck in Houston, TX

Axle Repair

We specialize in providing axle repair and maintenance services for heavy equipment and heavy, medium, and light-duty trucks.

Diesel mechanic performing brake repairs on heavy-duty truck in Houston, Texas

Brake Repair

Our commitment to excellence and attention to detail, you can trust our brake repair services to deliver outstanding results.

Diesel mechanic performing coolant system repair services in San Antonio, Texas

Coolant System Repair

We recognize the critical role of a properly functioning coolant system in fleets, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing ECM tuning services on semi truck in Dallas, Texas

Performance ECM Tuning

At OTR Fleet Service, we excel in performance ECM tuning of fleet, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing electrical repairs on semi trailer in Austin, Texas

Diagnostics & Electrical Repair

At OTR Fleet Service, we provide comprehensive diagnostic and electrical repairs, to achieve optimal performance and reliability.

Diesel mechanic performing driveline repairs on semi truck in Katy, Texas

Driveline Repair

Our driveline services will ensure optimal performance and reliability for your fleet, heavy-duty, medium-duty, and light-duty trucks.

Mechanic performing EGR & DPF cleaning in Dallas, Texas

EGR & DPF

At OTR Fleet Service, we specialize in EGR and DPF repair services for fleets and heavy-duty, medium-duty, and light-duty trucks.

Mechanic performing diesel engine repairs on semi trucks in Texas

Engine Repair, Rebuild & Conversion

Our expertise and top-quality services will ensure your trucks run at their best.

Diesel mechanic performing express lube service on semi truck fleet in Texas

Express Lube

We understand the importance of keeping your fleet, heavy-duty, medium-duty, and light-duty trucks running smoothly and efficiently.

Diesel mechanic performing exhaust system repairs for semi trucks in Texas

Exhaust System Repair

We are your go-to exhaust system repair and maintenance provider for fleet, heavy-duty, medium-duty, and light-duty trucks.

Diesel mechanic performing AC repairs on semi truck in Texas

HVAC System Repair

At OTR Fleet Service, our specialization lies in delivering exceptional on-the-go HVAC system repair and maintenance services.

Diesel mechanic performing oil & fluid services on semi truck fleet in Texas

Oil & Fluid

We are proud to offer professional oil and fluid services meticulously tailored to meet the unique needs of your vehicles.

Diesel mechanic performing suspension repairs on semi truck in Austin, Texas

Suspension Repair

The suspension system is crucial in ensuring a smooth ride, maintaining proper tire contact with the road, and enhancing stability.

Diesel mechanic performing wheel repairs on semi truck in Texas

Wheel Repair

At OTR Fleet Service, out skilled technicians will keep your wheels in optimal condition for enhanced performance and safety on the road.

Diesel mechanic performing transmission & clutch repairs in Dallas, Texas

Transmission & Clutch Repair

Our comprehensive range of transmission and clutch services is specifically designed to ensure unparalleled reliability.

Diesel mechanic performing truck & trailer alignment services in Texas

Alignment

OTR Fleet Service takes pride in being the premier choice for truck and trailer alignment services.

Testimonials

customer insights

"Highly recommend OTR Dallas for inspection and repair. Michele was awesome! She’s professional and helped us a lot. Great communication. Reasonable price for repairs. Thanks Michele for all the help."  //  Mike Alhoutari

Alternative Distributors

5 stars

"OTR has been a great help to us in both the Dallas and Houston areas. The staff is always very helpful and informative. They provide great customer service, their mechanics, both mobile and in house, are very through and informative."

rodney geibe

5 Stars

"I have taken my trailer into this shop for years. Outstanding service. Everyone at the shop goes out of there way to get you back on the road as quick as possible. If you need work done on your truck or trailer, this is the place to go."

Eston Hammer

5 Stars

"Amazing place!  
Super friendly and fast staff. Rudy Ray was an amazing mechanic! Not only did he get the job finished the same day, he kept me in the loop the entire time. Shout out to him and the great staff at  OTR!"

Angel Cardiel

5 Stars

"Andrea and the rest of the crew were all incredibly punctual and effective. The staff was very kind and listened to my concerns and even gave me a complimentary multi point inspection. The repair was successful as well. Will be using them moving forward."

Caleb Thornburg

5 Stars

"Mike P came out in the rain and thunderstorm to help me get my piggy back back rolling! I really appreciate all his patience becasue he didnt have the key i did in the truck! He waited! I appreciate him and his patience! Thanks"

Caleb Thornburg

5 Stars

"I just want to thank Mario for his extreme professionalism. He made sure that the shock was well replaced and explained the process to my dad well. We usually do not write reviews but my dad could not stop talking about how well the interaction was and how well the job got done. Thank you Mario for this great experience."

Kabe Brown

5 Stars

"They were quick to respond to my needs when other companies were unable. I'd like to give a quick shout out to my man Edward from otr fleet services... that main drive belt 😳 was a pain but you stuck at it. Top notch work."

Deric Jean

5 Stars

"Working for a nationwide trucking company, having a company that we can rely on to keep our equipment running at it full potential is the number 1 reason we use OTR Fleet. The staff at Houston is fast, caring, and available."

Chris Burlison

5 Stars

"I operate a large fleet of trailers and OTR does an awesome job of maintaining my fleet. Block is the mechanic that keeps everything running and operating. He is always ready willing to do what it takes to ensure we do not miss a beat in our fast paced business. Thank you OTR and especially Block! Appreciate all you do for us!"

Semaj Johnson

5 Stars

"Just got serviced by Jacob Scott, very efficient in his work, I was told the eta was 3-4hrs, he was here in an hr and he’s very friendly 🤙🏾"

Ramon Espino

5 Stars

"I want to give Moses a big shout out!! He keeps my company’s fleet up to date and running!! Always going out of his way to make sure we are always taken care of! Thank you Moses for continuing to provide the up most excellent customer service and getting us out of some 911 maintenance!"

Azul Zamarripa

5 Stars

"Awesome team ! Professional helpful and knowledgeable, guys were willing me to help me out with no hesitation. If you’re in San Antonio or the area and need assistance don’t even bother looking else where ! Special thanks to Larry Hector and Delton. Great guys and great service."