MD Automotive
“The staff is always friendly, willing to explain the work and cost and always do a great job.”
Best Coolant & Radiator Flush in San Antonio, TX
22 mechanics listed · all 22 in San Antonio · 4 open weekends · 21 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
Timberwood Lube
“They tag teamed my oil change and filters and I was done in less than a hour.”
Finsanto Automotive
“Instead, they made sure I had a full list of recommended work with estimates.”
Angel Automotive Repair
“The mechanic was very helpful, found the problem with my vehicle i less then a day and got it running same day, prices was low and gave me 10% discount, god bless 🙏”
Goose Euro
“Art and Chris listened and provided a thorough description of the work their team would do to replace the headlamp on our vehicle.”
The Busted Knuckle Auto Repair
“Gabe and Tim are knowledgeable, professional, and always work to make sure your vehicle receives quality and affordable service.”
Listed for drivers in and around San Antonio, TX, these 22 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: San Antonio, TX
All 22 mechanics we list here are in San Antonio itself. We have 50 mechanics in San Antonio on file; this page shows the highest-rated 22. The mechanics on this page are rated from 4.3 to 4.8 across 8,921 reviews; all 22 have 50 or more reviews and 21 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price", "honest" and "diagnosis". 4 are open on Saturdays. The services the mechanics on this page list most often on their websites are transmission services (3), wheel alignment (3), air conditioning (2), bg products (2) and brakes (2). 1 shows a license on its website; 7 list staff certifications (ASE) and 14 have a BBB rating of A or A+. Domain records put 17 websites of the mechanics on this page at ten or more years old; the oldest dates from 1998. 5 offer financing; 3 give free estimates; 11 are family- or locally-owned and 11 list coupons or special offers. We count these figures across the mechanics on this page; 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 San Antonio?
Online booking is offered by 7 of the 22 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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Seymour's Garage
“It is very comforting to know I now have a garage I can trust and plan on seeing them in the future when I need auto repairs.”
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Auto Service Experts
“Carlos replaced several parts that kept going out after install for free and made sure I was good to go”
Goose Euro
“Marissa and the crew at Goose Euro were thorough, professional, and honest!”
Bavarian Auto Repair
“Bavarian graciously took on the repair and got the car running again after it had been sitting for a long time before I purchased it.”
Autobahn Automotive
“Autobahn Automotive did a terrific job on my car, taking care of everything I needed and advising me on next steps.”
Ruben's Auto Repair
“I called Lonnie and didn't question me really at all and took care of it because of the 3 year warranty.”
Advanced Asian & European Auto
“Richard's diagnosis was spot on, and the repair was done in the time promised and at reasonable cost.”
Performance Automotive & Transmission
“Just had work completed today, they even call to follow up on work they've performed.”
O'Brien's Automotive
“The technician Ryan is knowledgeable in BMWs, not many places are, definitely trust them with my car.”
Babcock Automotive
“A huge shoutout and kudos to the front desk team—Jeff, Daniel (Danny), and Chad—who are absolutely fantastic at taking care of all your automobile needs.”
Arrowwood Automotive
“What helped is they actually listened to my explanation of the issue and they didn't chase the symptoms, instead looked for the root cause.”
Chad Miller Auto Care
“They were honest, knowledgeable, dependable, and made sure I understood what was going on with my vehicle and what needed to be done”
Sport Auto Enterprise
“I came in for a pre-purchase car inspection a few days ago, and the mechanic did an amazing job at finding issues that the car owner didn't tell me about.”
Lone Star Radiator Company
“We've been going here for years for all of our radiator and AC condenser needs.”
Integrity 1st Car Pros (Cornerstone Auto)
“Great customer service and got my vehicle complete in a timely manner”
Larson's Automotive
“John and Chris did an excellent job of explaining details and cost of the repair.”
Why these companies made our list
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