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Greeley, CO · Fluid Services
Fluid Exchange Services
Light- & Medium-Duty
Eight fluids keep a work truck moving, cooling, braking, and shifting the way it should. We check and exchange all of them at intervals built around how your trucks actually run, not a generic schedule.
What fluid services does Truck City Service offer in Greeley, CO?
Truck City Service at 1415 1st Ave in Greeley exchanges motor oil, coolant, power steering fluid, brake fluid, differential oil, transmission fluid, A/C refrigerant, and windshield washer fluid for light- and medium-duty trucks, vans, and fleets. Factory-trained technicians use manufacturer-authorized products. Open Monday through Friday, 7:00 AM to 6:00 PM.
Every Fluid In A Truck Has A Job
Motor oil lubricates. Coolant regulates temperature. Brake fluid transfers stopping power. Skip one long enough and it doesn’t just wear out quietly, it takes something more expensive down with it.
“Brake fluid is the one people forget because it doesn’t have a smell or a color change you notice from the driver’s seat. It absorbs water over time, and that water lowers the boiling point right when you need the brakes most, going downhill with a load.”
Tammy, Service Advisor, Truck City Service, Greeley CO
That’s why we check all eight fluids at every visit instead of just topping off what’s low. If you run more than one vehicle, our fleet management program keeps fluid exchange dates on record across your whole fleet.
Fluids We Check & Exchange
Coolant / Antifreeze
Absorbs engine heat and keeps it from freezing in sub-zero Colorado mornings.
Power Steering Fluid
Hydraulic fluid that’s prone to leaks and contamination, so it needs regular inspection.
Brake Fluid
Transfers stopping power through the braking system. It absorbs water over time, which lowers braking performance.
Differential Oil
Lubricates the gears that transfer power to the wheels. Needs exchange at specified intervals.
Transmission Fluid
Internal lubricant for automatic and manual transmissions that keeps shifts smooth.
Windshield Washer Fluid
Keeps the windshield clear, with winter-mix options rated for freezing temperatures.
Fluid Intervals Worth Knowing
| Fluid | Typical Interval | Why It Matters |
|---|---|---|
| Motor oil | Every 5,000 to 7,500 miles | Old oil loses lubrication and lets engine wear accelerate. |
| Coolant | Every 30,000 miles or 2 years | Worn-out coolant loses its ability to prevent overheating and freezing. |
| Brake fluid | Every 2 years | Water absorption lowers the boiling point, which cuts stopping power under hard braking. |
| Transmission fluid | Every 30,000 to 60,000 miles | Heat and mileage break down fluid, leading to rough or delayed shifts. |
| Differential oil | Every 30,000 to 50,000 miles | Protects gears under load; skipping it accelerates wear on expensive components. |
Intervals are general guidance. Load, route, and duty cycle all move them, and our advisors can set a schedule around how your trucks actually run.
Signs A Fluid Service Is Overdue
- The oil life or maintenance light is on.
- The brake pedal feels softer or sinks further than usual.
- The engine runs hotter than normal on the temperature gauge.
- Steering feels heavier or makes a whining noise when turning.
- You notice a fluid puddle where the truck is parked.
- Shifts feel delayed, rough, or hesitant.
What Greeley Drivers Say
“I had an amazing experience with Truck City, specifically with Tammy Palmer. She worked everything out with my warranty, and the technicians were very thorough.”
“Good service, good staff. I had oil issues on my F350 and they got it fixed and covered under my warranty, first shop I’ve used that actually tried to use my warranty.”
“We were traveling from out of town when our fuel pump on our 2017 GMC went out and we got stranded near Greeley. Truck City got us back on the road fast.”
Common Questions
How many fluids does a work truck actually need checked?
How often should brake fluid be changed?
What happens if I skip a fluid exchange?
What’s the largest vehicle you service?
Do you use manufacturer-specified fluids?
Can you manage fluid schedules for a whole fleet?
How long does a fluid exchange take?
Are you open on Saturdays?
Find Us In Greeley
1415 1st Ave, Greeley, CO 80631
Phone
Hours
Mon–Fri: 7:00 AM – 6:00 PM
Sat & Sun: Closed
Service Area
Get Your Fluids Checked
One visit, eight fluids checked, nothing skipped. Get in this week in Greeley.