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A To Z Auto Repair
- Money
- Diagnosis
- Engine
“Awesome place to get the munster family wagon tuned up and fixed the place is family owned and they're straight forward and honest with the cost of repairs very nice staff.”
Best Coolant & Radiator Flush in St. Charles, IL
24 mechanics listed · 4 in St. Charles · 7 open weekends · 22 rated 4.5+
Data verified October 16, 2026
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Sooper Lube
“I was confused about my "maintenance required" light and they honestly told me that the dealer didn't reset it when I bought the car and I did NOT need an oil change.”
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RX Automotive
“We took our minivan here when we had some last minute trouble before heading out on a trip and they were able to have the problem diagnosed and resolved quickly to get us back out on the road.”
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Nofsinger's Auto Repair
- Engine
- Honest
- Dealership
“My family and I have learned to trust Nofsinger's mechanics over the dealership's thanks to the regularly lower cost of repair, honest summaries on the condition of the vehicle, and more personal touch they are able to provide.”
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Excel Automotive Repair
- Team
- Diagnosis
- Communication
“Like any shop they suggested several other things they could do to our son's older car, but were not pushy and did great work on the main repair with excellent communications.”
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Krafftkare Automotive Inc.
- Fluids
- Report
- Team
“Staff is courteous and pleasant, whilst I waited for my ride home after dropping off my Chevy Trax to be worked on Steve inquired about my comfort, whether the temperature was warm enough for me, this goes a long way for me.”
Listed for drivers in and around St. Charles, IL, these 24 shops list coolant flushes and antifreeze service. What each one says about the coolant types it stocks, machine flushes and warranties comes from its own website; ratings and quotes come from public reviews.
Area overview: St. Charles, IL
4 of the 24 mechanics we list are based in St. Charles; the other 20 serve St. Charles from towns including Elgin (8 mi), Schaumburg (14 mi) and Villa Park (17 mi). The mechanics on this page are rated from 4.4 to 4.9 across 5,043 reviews; 23 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise quality (89%), professionalism (87%) and value (73%). The topics that come up most in reviews of the mechanics on this page are "diagnosis", "honest" and "fair". 7 are open on Saturdays. The services the mechanics on this page list most often on their websites are brake repairs (6), preventative maintenance (3), emissions (2), engine diagnostics (2) and engine repairs (2). 7 list staff certifications (ASE) and 18 have a BBB rating of A or A+. 23 have ten or more years of experience, the longest 75 years. 7 offer financing; 13 are family- or locally-owned and 10 list coupons or special offers. We count these figures across the mechanics on this page; distances are straight-line, and hours and prices change, so confirm the details with the mechanic before you visit.
Can I book a coolant change online with shops listed for St. Charles?
Online booking is offered by 9 of the 24 shops. Put your engine and the coolant specification in the notes when you book, since the shop needs the right fluid on the shelf before you arrive rather than a universal jug under the counter.
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North Fifth Auto Repair
- Caliper
- Engine
- Couple
“I contacted the shop and they informed me that it was under they had me drop off my van last night and i received a call around noon today that my van was repaired at no coast to me..”
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Action Auto Clinic
- Fair
- Job
- Exhaust
“From new tires to front end work to ignition repair to regular oil changes, they have been trustworthy, competent and concerned about making sure my vehicles were repaired properly.”
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Dave's Auto & Radiator Repair
“My mom took her truck to get a tune up done there waas absolutly nothing wrong with the truck well the day it was getting picked up it would not start come to find out they blew up the motor the 20 yr experienced mechanic did not ckeck to see what ki...”
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Palatine Shell Service
- Oil
- Honest
- Brakes
“We immediately noticed upon pulling the car in for inspection that the customer had left the lug nuts loose on his right rear wheel and was also missing one.”
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McLean Auto Repair
“Patrick takes his time to explain everything very thoroughly, in a way that is easy to understand for someone who isn't familiar with all the terminology associated with cars and engines ect.”
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Clark's Car Care Inc
“I hung out with Joey for a brief minute, wished the receptionist a Happy Birthday and drove off with my chest poked out and my chin held high knowing that I would make that Drive from Westchester IL to Clark's car care in Naperville again.”
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Tuffy Tire & Auto Service Center
“I have been their customer on and off over the last 5 years and I always come back to them because they tell me what actually NEEDS to be done to my car, they don't suggest a whole bunch of services that make no difference in the safety or functional...”
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Casey Automotive
- Truck
- Vehicle
- Job
“I was an out-of-state stranded motorist with a shift linkage cable that got disconnected at the transmission they didn't take advantage of me and they got me down going down the road in about a half an hour the rates reasonable”
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CNS Automotive
- Tire
- Vehicles
- Engine
“I brought it in that Thursday for struts, and they called and said they were fine, saving me hundreds of dollars when they could of easily done the repair without telling me it wasn't needed.”
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Advanced Auto
“Provided me with the specific part and case number so the dealership knew exactly what was needed, and they didn't charge anything or take advantage of the situation, just helped educate me.”
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Car Doctor Jr
“I don't remember who I spoke with but he was kind enough to spend almost 20 minutes on the phone with me to explain what might be going on with my car and what a dealership would recommend versus an independent mechanic.”
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Farnsworth Auto
- Financing
- Team
- Drive
“I was able to get 4 great brand new tires, a synthetic oil change, 15 point inspection, and an alignment for less than it would have cost for just 4 of the Michelin Defender tires installed.”
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Techworx Inc.
- Battery
- Vehicle
- Quality
“After a few miles of driving he was able to diagnose the problem to be a transmission issues so he told me it will cost $450 to get it fix and I can pick it up around 5:30pm and so me and my wife went to pick up the car.”
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Lisle Automotive & Tire
“Friendly knowledgeable reasonable..”
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BOB Auto Repair
- Check
- Area
- Tires
“They helped me out in a bind with my car - the repair was done fast, the price was better than any other shop in the area, and the staff was pleasant to deal with.”
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Lord's Auto Clinic Inc
- Quality
- Oil
- Old Car
“The last time I had my 15 year old car in for service they told me "X needs to be done, but you might not care since your car is so old and it's not a safety issue.”
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Stan's Service Station
“Would like to share my experience at Stan's Auto been going there for years they go out of their way to get your vehicle back to you as soon as possible they're quoted price is what you pay when you pick up your vehicle the mechanics are terrific alw...”
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Chicago Auto Center
- Mechanic
- Future
- BMW
“Not only were they able to get me in the next day they did it for almost 1/3rd of what the dealership wanted who wanted me to wait for 2 weeks with no loaner.”
Radiator Coolant Fluid Exchange Services in St. Charles, IL Cost Estimates
Minimum cost
$60
Maximum cost
$230
National Average
$95
$100
$150
Typical price range is based on 283 cost profiles
Why these companies made our list
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