Is your semi-truck or heavy-duty vehicle due for an oil change or fluid service? At Amoretti Diesel Repair and Service in St George, UT, we provide professional oil and fluid maintenance to keep your engine, transmission, and other critical systems running smoothly.

Expert Truck Oil Change & Fluid Services in St George, UT
Your truck’s fluids are essential for lubrication, cooling, and overall performance. Neglecting fluid changes can lead to engine wear, overheating, and mechanical failures. Our comprehensive oil and fluid services keep your fleet running efficiently and help avoid costly repairs.
Our Heavy-Duty Oil & Fluid Services Include:
- Diesel Engine Oil Change – Full synthetic, semi-synthetic, and conventional oil changes for maximum engine protection.
- Transmission Fluid Change – Draining and replacing manual or automatic transmission fluid to prevent shifting problems and overheating.
- Coolant Flush & Replacement – Flushing and refilling the cooling system to prevent engine overheating and corrosion.
- Power Steering Fluid Service – Replacing old power steering fluid to maintain responsive steering control.
- Brake Fluid Flush & Replacement – Ensuring proper brake system performance and safety.
- Differential & Gear Oil Change – Lubricating gears and axles for smooth operation and longevity.
- DEF (Diesel Exhaust Fluid) Refills – Ensuring your emissions system functions properly and remains EPA-compliant.
- Hydraulic Fluid Service – Servicing hydraulic systems for dump trucks, heavy machinery, and commercial vehicles.
We use high-quality, manufacturer-approved fluids to maintain peak truck performance and reliability.
Why Choose Us for Oil & Fluid Services?
At Amoretti Diesel Repair and Service, we understand the importance of regular fluid maintenance in preventing engine damage and breakdowns. Here’s why truckers and fleet owners trust us:
Certified Diesel Technicians – Experts in heavy-duty truck oil changes and fluid services.
High-Quality Oils & Fluids – We use premium synthetic and conventional oils for maximum engine protection.
Fast & Efficient Service – Quick turnaround times to reduce downtime for owner-operators and fleets.
Preventive Maintenance Plans – Regular oil and fluid checks to help prevent costly repairs.
Fleet Service Available – Bulk oil and fluid services for commercial fleet maintenance.
Contact Us for an Oil Change & Fluid Service Now: Call 435-773-8511!
If your truck needs an oil change, coolant flush, or transmission fluid service, call Amoretti Diesel Repair and Service at 435-773-8511 today! We’ll keep your truck’s fluids clean and your engine running strong.
FAQs
What Areas Do You Serve for Oil & Fluid Services?
We provide oil changes and fluid services in St George, UT, and surrounding areas, including:
Washington, UT; Hurricane, UT; Santa Clara, UT; Ivins, UT; La Verkin, UT; Toquerville, UT; Leeds, UT; Springdale, UT; Enterprise, UT; Cedar City, UT.
How Often Should I Change My Truck’s Engine Oil?
Most heavy-duty trucks require an oil change every 15,000-25,000 miles, depending on engine type and operating conditions.
What Happens If I Skip Fluid Maintenance?
Neglecting oil and fluid changes can lead to engine wear, transmission failure, overheating, and reduced fuel efficiency.
How Can I Get My Truck’s Fluids Serviced?
Call 435-773-8511 or visit Amoretti Diesel Repair and Service in St George, UT, to schedule an oil change or fluid service.
Heavy-Duty Truck Repairs in St. George, UT
We specialize in engine repairs, transmission services, brake system repairs, cooling system maintenance, and electrical diagnostics. If your truck is experiencing performance issues, overheating, or brake failures, trust our certified mechanics to restore it to optimal working condition.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
Randy B


