1565 Dekalb Ave., Sycamore, IL 60178
Monday-Friday: 8AM-6PM
Saturday: 8AM-12PM

Keeping You Road Ready with Complete Auto Care

Auto Repair Shop for the Dekalb, IL, Area

Engine repairs performed in Dekalb, IL

Milex-Mr. Transmission provides a wealth of auto repairs and maintenance for those in and around Sycamore. We offer complete auto care that includes performance checks, factory maintenance, diagnostic services, and so much more.

Free Performance Check

Our free Performance Checks will help keep your vehicle running much longer. These services include a fluid check, road test, external adjustment inspection, and pan examination.

Brake Repair

Keeping up with brake repairs and maintenance services is critical to your safety on the road. The brake system is comprised of many components that include brake pads, cylinders, drums, and rotors. These components all endure wear and tear with miles driven and will need replacement and maintenance at some point.

Check Engine Light

Today’s vehicles are primarily computer-controlled and utilize sophisticated technology to operate properly. When your vehicle is illuminating the “Check Engine” light or not running properly, oftentimes computer diagnostics are needed to determine what part is malfunctioning and what type of auto repair is needed.

Diagnostic Services

When your vehicle is illuminating the dreaded “Check Engine” light or not running properly, Computer Diagnostics are often needed to determine what part is malfunctioning. In the event that you run into car trouble, Milex-Mr. Transmission can help.

Heating & Cooling Systems

With a Coolant Service from Milex-Mr. Transmission, our technicians will thoroughly clean the cooling system and replace your engine coolant. This service will keep your car road-ready by extending the life of your radiator and preventing rust and corrosion in your cooling system, which will maintain proper heating and cooling of your engine.

Clutch Repairs

The clutch is a critical component that connects the engine to your vehicle’s drivetrain. The technicians at Milex-Mr. Transmission are prepared to assist you with your clutch repair and/or assembly needs.

CV Joints

Your car’s CV joints are a collection of bearings and cages that are protected by the CV boot. Regular inspections of the boot will ensure it is sealed so no dirt or grime gets in to wear down your joints, which will provide you with a smoother ride.


Without a properly functioning drivetrain, your vehicle will not have the power it needs to move from one place to another. There is more to this crucial component than meets the eye. Because of this, it is important to seek the help of a drivetrain specialist like Milex-Mr. Transmission.

Emission & Exhaust

The exhaust system routes dangerous gas from the engine out and away from the car. The exhaust system reduces exhaust noise from the engine. The catalytic converter reduces the level of harmful pollutants in the exhaust. Your car’s emission system keeps the engine running cleanly and efficiently in all sorts of operation.

Engine Repairs

Without a properly functioning engine, your car will not be able to get from Point A to Point B, making engine replacement necessary. With the right maintenance and auto repairs, your engine can last for miles and miles.

Factory Maintenance

Milex-Mr. Transmission can perform factory recommended maintenance without voiding your new car warranty. All cars need to adhere to scheduled maintenance to protect the safety of you and your family.

Fuel System

A clogged and dirty fuel system can cause other major problems in your vehicle, such as engine malfunction, hard starts, and poor performance. Attending to your vehicle’s fuel system with preventive maintenance can help prevent these failures.

Oil Changes & Tune-ups

At Milex-Mr. Transmission, we know what it takes to keep a car running in tip-top condition. Basic car services, such as oil changes, spark plug replacements, and fuel filter replacement, are ways to keep your car humming and road ready.

Preventative Maintenance

Preventative maintenance is one of the most effective ways to avoid incurring expensive repair costs. Something as simple as a regular oil change can protect your engine, increasing the longevity of its road time.

Steering & Suspension

At Milex-Mr. Transmission, we know your vehicle’s steering and suspension system keep you safe by controlling the vehicle’s ride and handling. Part of the steering and suspension maintenance includes getting these systems checked regularly to see if car suspension repair is necessary.

Transmission Maintenance

Milex-Mr. Transmission offers different levels of service, from fluid and filter exchange to fluid and filter flush. Our transmission maintenance services help provide smoother shifting, improved performance, component failure reduction, and increased vehicle longevity.

Transmission Repair

Your transmission system includes transmission fluid, electrical components, universal joints, and a torque converter. For proper transmission repair to take place, these components must be dismantled, cleaned, and inspected for wear. This process provides you with an accurate assessment of your vehicle’s problem before the transmission repair commences.

Truck Transmission

Many of our locations service delivery trucks, box trucks, RVs, and 4x4s. We are the specialists when it comes to truck transmissions.



Available Limited Nationwide Warranties

  • 12 Month – 12,000 Mile Warranty This warranty covers repairs and/or replacement of the transmission, parts, or repairs listed on the front of the repair order against material defects and workmanship for 1 year from the date of delivery or 12,000 miles, whichever occurs first.
  • 6 Month Warranty – Unlimited Mileage This warranty covers repairs and/or replacement of the transmission, parts, or repairs listed on the front of the repair order against material defects and workmanship for 6 months from the date of delivery.
  • 90 Day Warranty This warranty may cover a resealed/recondition transmission, standard-clutch assembly, and torque converter (if applicable) against failure of materials and workmanship for 90 days from the date of delivery.

Ask one of our professionals for additional information about extended warranty programs available. Warranty programs may vary.

Please contact us regarding protecting your transmission with a lifetime warranty of $4,000 through Castrol.

Milex-Mr. Transmission |
1565 Dekalb Ave., Sycamore, IL 60178
| 815-899-2299 | info@sycamoremilexmrt.com


Monday-Friday: 8AM-6PM
Saturday: 8AM-12PM