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Timberwood Lube
“Their ability to handle different types of vehicles with the same level of skill and attention to detail is a significant plus, making it a go-to place for many vehicle owners.”
Best Coolant & Radiator Flush in San Antonio, TX
24 mechanics listed · all 24 in San Antonio · 7 open weekends · 20 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
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MD Automotive
“Well I went to pick up my car it didn't start after sitting for 5 days at MD automotive the 2014 Dodge Charger battery drain but Jason said I can bring it back to fix where the draw is coming from I trust MD automotive but I took it to the shop for t...”
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Finsanto Automotive Repair Shop
“I had my vehicle worked on from a shop that is no longer in business, the owner sold the business to one of the competitors out there, which I returned to but just gave me a bad impression with just throwing out prices before EVEN asking about my pro...”
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Angel Automotive Repair
- Price
- Motor
- Mechanic
“I called them and they took me and my truck together in their tow truck from San Antonio to the valley, 4 hours away from the city of Donna, TX, good price, very friendly, I highly recommend them, thank you angel, 5 starz”
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The Busted Knuckle
- Price
- Honest
- Vehicles
“They are honest, hardworking people who won't take advantage of you their prices are always reasonable and fair, and they've helped keep multiple cars in our family going over 200,000 miles”
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Seymour's Garage
“Even when a I had a small meltdown due to my on going truck issues (which definitely not their fault, if anything they FIXED IT) They have definitely gained a new customer and will refer anyone who needs their expertise.”
Listed for drivers in and around San Antonio, TX, 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: San Antonio, TX
All 24 mechanics we list here are in San Antonio itself. We have 50 mechanics in San Antonio on file; this page shows the highest-rated 24. The mechanics on this page are rated from 4.2 to 4.9 across 7,155 reviews; all 24 have 50 or more reviews and 20 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". 7 are open on Saturdays and 1 on Sundays. 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 15 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. 6 offer financing; 3 give free estimates; 12 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 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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Goose Euro Car Care
“Annette Peralta, JP, Brett, and the rest of the staff at Euro Car Care are the best in the business, I've been living here in San Antonio for a little over two years, and for the last year, I've been taking my 2007 Mini Cooper there for all its mecha...”
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Auto Service Experts
- Vehicle
- Electrical
- AC
“I say this because the rear end I brought in turned out to be an obsolete old Cadillac rear end that somebody swapped out before I got the truck with an incorrect rear wheel bolt pattern for my truck.”
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Cordova Auto Center #4
“This is the 3rd time I've brought a vehicle to them to do either ac work or an alignment they are professionals at what they do & its very affordable & they work fast and if I ever have a problem with the work the guy had no problem checking it again...”
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Goose Euro
“That evening Robert called and explained the issue, also saying it would not affect driving at all and encouraging us to go ahead with our trip rather than wait around for a few days while the repair (diesel exhaust reader) was performed.”
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Autobahn Automotive Service & Repair For Audi
“The invoice detailed all the work performed, including the replacement of front upper control arms, front lower frontward control arms, valve cover gasket, brake flush, spark plugs, and washer nozzle cleaning.”
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Bavarian Auto Repair
- BMW
- Dealership
- Vehicle
“BMW Principle of San Antonio told me I had to change the transmission for a 3rd time (all original new BMW used at the BMW dealer) and they also told me it was no longer carried as my vehicle is from 2003.”
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Arrowwood Automotive
- Price
- Honda Accord
- Vehicle
“Greg called me, and this is what mattered the most to me, he gave me a detailed explanation on what they did to the vehicle as well as informed on some of the things that are going to need to be serviced soon with a price for all that as well as a pr...”
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Ruben's Auto Repair
- Vehicle
- Team
- Money
“My van developed a noise when moving, I dropped it off at Ruben's on Thursday morning, they gave me a ride back to my hotel that was a long way from the shop- they not only removed the screw that was in one tire and repaired it, they also did a compl...”
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Performance Automotive & Transmission
“If you wanna on a shop that does the job and you get your moneys worth definitely I will trust Carl, Noa, and everybody at this facility hands down top to bottom or bottom to top one of the best shops I've known I've been out here for years and they'...”
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Chad Miller Auto Care
- Honest
- Fluid
- Diagnostic
“You expect good service from a shop that has been around this long, but what they actually provide is great service recently had an issue with my Chevrolet, these folks went way beyond the extra mile to get me back on the road again they stayed afte...”
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O'Brien's Automotive
“Very knowledgeable and professional shop had them work on my Dodge Ram cummins transmission they did a rebuild with very great pricing and also solved some electrical issues I've been having for months that other shops haven't been able to figure out...”
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Babcock Automotive
“Great service from front to back, got my car in and out for a valve cover gasket replacement job on my SUV, they worked with me on getting my car back outside of hours, they were down to earth and not jerks like at most shops, and they exceeded every...”
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Advanced Asian & European Auto
- Price
- Vehicles
- Honest
“I continue to take my cars here time after time because 1) they're honest 2) they perform excellent work 3) they'll turn away business if it's not in need of repair at the moment - no pressure on you at all”
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Larson's Automotive
“When my son's truck broke down, in the rain, he needed a mechanic that was close to him to limp his truck into and hopefully fix it…a quick google maps search and I found Larson's, told him to drive there and crossed my fingers they would live up to ...”
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Lone Star Radiator Company
- Prices
- Engine
“I've had 2 radiators (both for '60's classic cars) rebuilt by the team at Lone Star Radiator and haven't had any issues with them.”
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Sport Auto Enterprise
- Price
- Diagnose
- Vehicle
“After going to one of San Antonios most popular auto repair shops for an oil change and A/C check , after an hour I was told by the lead mechanic my vehicle should be sold for parts because my engine was cracked because of a blown head gasket amongs...”
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Mendo Motorz Auto Center
“The service here is so awesome and professional, after calling several place an only being told it would take weeks or months to be seen, they where able to see me same day and have my vehicle back within a few days 😊 Ernest was awesome, thank you!!...”
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Cornerstone Automotive
- Vehicle
- Work
- Inspection
“I really appreciated the mechanic I engaged with and the candid dialogue about my concerns related my vehicle since I went to three other automotive shops to fix my vehicles issue (one being the dealership).”
Radiator Coolant Fluid Exchange Services in San Antonio, TX Cost Estimates
Minimum cost
$75
Maximum cost
$287
National Average
$119
$125
$188
Fair price range is based on 469 cost profiles
Why these companies made our list
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