Oakville Automotive Inc
“(Pads, rotors etc) Dropped the car off on Tuesday morning and picked it up Tuesday afternoon.”
Best Coolant & Radiator Flush in St. Louis, MO
17 mechanics listed · all 17 in St. Louis · 5 open weekends · 12 rated 4.5+
Data verified October 19, 2026
Benchmark Auto Repair
“I think this auto repair shop has excellent mechanics and the absolute best customer service I have experienced.”
Carsmart Auto Service
“Patrick and his team are absolutely 💯 the best I've ever seen they have fixed my poor "Tre" more times than I care to mention they are always so sweet and are completely professional and always treat with kindness.”
Marty's Auto Shop
“They came right outside and pulled my car into the shop and switched my tire out with my spare at no charge.”
Union Weber Autocare
“Mark and Shane are two of the most knowledgeable and trustworthy mechanics I've met, and my family has been coming here for years.”
Eric's Master Auto Repair
“They even provided valuable advice on which repairs could wait, saving me time, money and further solidifying my trust in their integrity and commitment to customer satisfaction.”
Listed for drivers in and around St. Louis, MO, these 17 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. Louis, MO
All 17 mechanics we list here are in St. Louis itself. The mechanics on this page are rated from 4.0 to 5.0 across 3,290 reviews; 16 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (81%), value (73%) and quality (69%). The topics that come up most in reviews of the mechanics on this page are "communication", "diagnosis" and "fair". 5 are open on Saturdays. The services the mechanics on this page list most often on their websites are oil changes (3), steering & suspension (3), belts & hoses (2), brakes (2) and check engine light (2). 6 list staff certifications (ASE) and 8 have a BBB rating of A or A+. 10 have ten or more years of experience, the longest 49 years. 3 offer financing; 2 give free estimates; 1 is family- or locally-owned and 6 list coupons or special offers. We have a website on file for 15 of the mechanics on this page; 13 publish a contact page; 3 list a public email and 4 take bookings online. We count these figures across the mechanics on this page; hours and prices change, so confirm the details with the mechanic before you visit.
Which shops listed for St. Louis discount a coolant flush?
6 of the 17 shops on this page list a coupon. A discounted flush is worth taking if the service is due and worth skipping if it is not, so check the interval in your manual first. Ask which coolant the offer includes, because the cheap one may not be yours.
Epic Automotive
“Expertly done this is a very good mechanic shop prices are as stated no surprises”
Jackson's Master Auto Repair
“I have been going here since I first got my license and will never go anywhere else (and I now live a bit far and am willing to travel).”
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Sant Automotive
“Jeff got me in and out in a few hours and advised what should be fixed and what could wait.”
Bimmers R Us
“Traveling through without an appointment, 440 miles from home, the car started making a horrendous grinding noise under the hood and they got us in without an appointment on a moments notice, found and fixed the immediate issue.”
Spirit One Automotive
“They don't try to make money by encouraging extraneous services and in fact, seem to do what they can to help the customer save money.”
Euro Car
“Replaced all the leaking vacuum lock mechanisms and the shocks and now they work like new!”
Midas
“I just had a fuel pump replaced with Calverts and my car is running great.”
King Auto Repair
“All the employees are very friendly and provide the best service when possible.”
Precision Import Auto Service
“Fritz and his staff identified the obscure electrical issue without having to replace any of the computers involved, saving me a lot of cash.”
Speedy Lube
“All my cars come here been coming here for years I know everyone here 5star service”
Reliable Automotive
“Had my transmission fixed there the y got on it in a timely manner and was fixed right”
Why these companies made our list
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