Quality Oil Changes & General Fluid Maintenance in Carbondale, CO

Your truck doesn’t get a day off, and neither should your maintenance. At JW Diesel & Automotive, our oil changes and fluid services are built for the long haul, not just to clear a dash light. We use premium fluids that meet OEM specs, tailor every service to your vehicle’s needs, and back it all with the integrity you expect from a shop that puts quality first. From Carbondale to Grand Junction, we keep your workhorse running strong.

It’s Not Just Oil, It’s Your Engine’s Lifeline

Every mile you drive creates heat, friction, and contamination. Your fluids, oil, coolant, transmission fluid, and more, are your first line of defense. Over time, they degrade, collect dirt, and lose their ability to protect your systems. Ignoring this can lead to overheating, part failure, and expensive repairs.

Routine oil changes and fluid maintenance help your vehicle:

Maintain fuel efficiency and performance
Prevent early wear and overheating
Reduce emissions and overall costs
Meet manufacturer service guidelines
Extend the life of key systems like your engine and transmission

Oil Change Intervals:
What Your Truck Really Needs

Your driving habits, engine type, and environment all play a role in your maintenance intervals. That’s why we never guess. At JW Diesel & Automotive, we go by your manufacturer’s specs and real-world conditions.

Synthetic oil changes are typically recommended every 7,500 to 10,000 miles
Semi-synthetic blends offer protection up to 5,000 to 7,500 miles
Conventional oil may require changes as soon as 3,000 miles

If you drive in harsh conditions (frequent towing, stop-and-go traffic, extreme temperatures), we may recommend shorter intervals or a more protective oil blend.

Signs You’re Due for an Oil Change

Even with regular intervals, there are signs your vehicle may need oil change sooner. Don’t ignore:

Oil change reminder light or service indicator
Dark, dirty, or gritty oil on the dipstick
If the oil becomes contaminated

If you notice any of these, come by for a quick inspection. We’ll check your levels, quality, and give you honest feedback.

What We Offer: Oil & Fluid Services Built for Reliability

We tailor each service to your vehicle, diesel, gas, or fleet, with the right tools, fluids, and filters to do the job right.

Full-Service Oil Changes

We perform full oil changes using the correct oil type for your engine, conventional, synthetic blend, or full synthetic. Every service includes fluid top-offs, vital checks, and resetting your service reminders. We make sure your oil system is clean, your protection is solid, and nothing gets missed.

Oil Filter Replacement

Your oil filter does more than trap debris, it protects your engine. We replace old filters with premium, OEM-quality options matched to your engine specs for superior filtration and oil flow. It’s a small part that makes a big impact on engine life.

Transmission Fluid Service

We perform fluid exchanges or full flushes based on your vehicle’s system. This includes pan removal and filter replacement (when applicable), a full inspection, and refill with fluid that meets factory specs for smooth, reliable shifting.

Coolant Flush & Radiator Service

We drain and replace old coolant, pressure-test the system, and inspect the radiator and heater core for leaks or wear. If needed, we add conditioners to help prevent corrosion and maintain consistent engine temperature.

Brake Fluid Flush

Brake fluid is flushed and replaced with fresh, DOT-rated fluid to restore pressure and performance. We also inspect the system for leaks, corrosion, or wear that could impact braking safety.

Differential & Transfer Case Service

We replace worn gear oil with fresh synthetic fluid, clean the housing and magnetic plugs, and inspect for moisture or gear damage, protecting your drivetrain under heavy use.

Power Steering & Windshield Washer Fluids

We check and top off both systems, inspecting for leaks or wear and ensuring smooth steering and clear visibility in all conditions.

Real Work. Real Trucks. Real Results.

At JW Diesel & Automotive, our oil and fluid services are built to boost performance, not just reset a light. Premium products, auto repair services done right, on your schedule.

Expert-Led Service

Performed by certified techs with diesel-focused training and years of hands-on know-how.

The Right Fluids, Every Time

From synthetic blends to full synthetic oils, we match your vehicle’s exact specs.

Fleet Ready

Our shop is built for the demands of diesel pickups, work vans, and commercial trucks.

Transparent & Efficient

DVIs and drop-off convenience make service simple, fast, and pressure-free.

Backed with Confidence

Every service includes our 12-month/12,000-mile warranty.

Backed by Warranty

We stand behind our work with a 12-month / 12,000-mile warranty on parts and labor.

JW Diesel & Automotive

Diesel strong. Fleet ready. Driven to be the best.

Quick Drop-Offs, Quality Service. Let’s Get It Done

Oil changes and fluid care might seem simple, but when done right, they’re the first line of defense against major repairs. At JW Diesel & Automotive, we take routine maintenance seriously because we know your truck, your time, and your work depend on it.

Drop by 794 Industry Place, Carbondale, CO 81623. Call us at (970) 510-5157 or text (970) 510-6344 to schedule service. Serving Carbondale, Glenwood Springs, Eagle, Aspen, Grand Junction, New Castle, and the entire Western Slope.

Driven to be the best.