Truck Oil & Fluid Services in San Antonio, TX

As an owner-operator or fleet manager, it's important to stay on top of keeping things oiled and fluids topped up. Santin Auto & Truck Repair provides expert oil and fluid services to keep your fleet diesel truck running smoothly.

Diesel mechanic performing oil & fluid services on semi truck in San Antonio, Texas

Why Oil and Fluid Services are Important for Diesel Trucks

Regular oil and fluid services are critical to the longevity and performance of your diesel truck. Diesel engines operate at higher temperatures and pressures than gasoline engines, which can cause oil and fluids to break down more quickly. The oil and fluids can also become contaminated by debris over time, further lessening their effectiveness. Neglecting your truck’s oil and fluids can lead to a range of problems depending on the area in question such as engine overheating and failure, transmission failure, and differential issues amongst others.

Diesel engine oil is subjected to high temperatures and pressures, causing it to break down over time. It subsequently loses its ability to lubricate and protect the engine's moving parts from the friction generated. This can cause premature wear and tear, leading to costly repairs. Regular oil changes are essential to keep your engine running smoothly and prevent damage.

In addition to oil changes, other fluids in your diesel truck also require regular attention. One of the more important fluids in your diesel truck is the transmission fluid. This fluid plays a crucial role in the operation of the transmission, helping to cool and lubricate its moving parts. Neglecting transmission fluid services can cause shifting problems, reduced fuel efficiency, and even transmission failure. Another adjacent fluid to keep in mind is the transfer case fluid, which serves the same function as transmission fluid in lubricating and cooling the case’s moving parts.

Gear Oil Vs. Transmission Fluid

When you bring your truck or trucks in for oil and fluid changes, keep in mind the different terminology. The most critical are gear oil and transmission fluid. Although the two terms are often used interchangeably and perform essentially the same role, they aren’t necessarily the same on a technical level.

Gear oil refers to the lubricant used in manual transmissions, transfer cases, and differentials in your truck. Gear oil is highly viscous (meaning it’s resistance to thickening and thinning at low and high temperatures, respectively), very heat resistant, and withstands high pressures typical in manual transmissions and the like in addition to preventing corrosion, oxidation, and debris deposits from damaging critical components.

Meanwhile, transmission fluid is meant for automatic transmissions and is characterized by low viscosity, a lower boiling point, and the inclusion of detergents and anti-foaming additives.

While the team at Santin Auto & Truck Repair knows their stuff and will know whether your truck needs gear oil or transmission fluid, sometimes you’ll need to perform a top-up yourself. That’s why it’s important to know which transmission type your truck uses and to follow manufacturer recommendations when it comes to oil and fluid specifications.

What Santin Auto & Truck Repair Can Do for You

Our expert technicians use high-quality products and the latest equipment to ensure your truck receives the best possible care. At Santin Auto & Truck Repair, we provide expert oil and fluid services to keep your vehicle running smoothly. Contact us today to schedule an appointment and experience the Santin Auto & Truck Repair difference.

Santin Auto & Truck Repair Center

Commercial Truck & Auto Repair Services

Our full-service truck repair shop offers top rated commercial truck & auto repair services for all types of cars & trucks. Our experienced mechanics are equipped with the latest tools and technology to ensure your vehicle is back on the road in no time.

Customer Reviews

What our customers say about our light, medium & heavy-duty repair services.

Service was great and fast. Esteban came quickly to fix my flat tire and it took no time at all. He is excellent at what he does and was happy to help. Highly recommend
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Brett Noble

Esteban provided hands down the best customer service. My uhaul vehicle broke down and he was unable to fix it, it needed a tow. Esteban ensured I was safe and in a good place with uhaul sending a tow before he left. He even went out of his way to get me water and snacks since I have been on the side of the road for 3 + hours. There are good people in this world and Esteban is one of them. Amazing service and an even better human being.
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Sebastian Castillo

Absolutely the best service experience ever! EJ did an amazing job getting me back on the road quickly. Highly recommend them for your car care and road service needs. Thank you!
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Jeremy O'Neal

Contact Us

Looking for reliable truck, fleet or auto repair services? Get in touch with Santin Auto today to schedule service!

9822 Perrin Beitel Rd San Antonio, TX 78217
Santin Auto & Truck Repair Center