Miramar Automotive & Transmission
“They were able to diagnose my Van and get the work done quickly at a price well worth it!”
Best Coolant & Radiator Flush in San Diego, CA
22 mechanics listed · all 22 in San Diego · 5 open weekends · 21 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
Japanese Car Masters
“Didn't seem like they were trying to sell me something I didn't need”
FTS Auto
“The Father and Son Team of Joe and Nick are top notch, highly recommended.”
1 Way Auto Clinic
“They were communicative, not pushy and helped me to pick appropriate and affordable services needed beyond the basic tune up.”
Motec Auto Care
“Definitely coming here from now on if I need more work done.”
Jaguar Coventry Cars
“Work is completed as promised, and they always give a 10% discount to returning clients.”
Listed for drivers in and around San Diego, CA, 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 Diego, CA
All 22 mechanics we list here are in San Diego itself. We have 57 mechanics in San Diego on file; this page shows the highest-rated 22. The mechanics on this page are rated from 4.4 to 4.9 across 6,571 reviews; all 22 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (86%), quality (79%) and value (68%). The topics that come up most in reviews of the mechanics on this page are "diagnosis", "fair" and "honest". 5 are open on Saturdays. The services the mechanics on this page list most often on their websites are brake repair (3), maintenance (3), brake services (2), engine repair (2) and suspension services (2). 1 shows a license on its website; 9 list staff certifications (ASE) and all 22 have a BBB rating of A or A+. 18 have ten or more years of experience, the longest 78 years. 5 offer financing; 4 give free estimates; 10 are family- or locally-owned and 13 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 Diego?
Online booking is offered by 8 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.
Morena Automotive
“Not money hungry like all the rest , 10/10 recommended & i will be back if i need anything else done to my car !”
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John's Automotive Care
“Very honest mechanics, which can be hard to find in this industry.”
Pacific Auto Service
“We have been a client for over 20years and will continue to bring our vehicles to Pacifix Auto Service.”
Smitty's Service
“They do excellent work and don't try to push you to get other services done.”
Transmasters Auto Care
“The staff there are friendly and professional, delivering exceptional service at a reasonable price.”
Minsky Mercedes
“They are friendly and knowledgeable and I saved a TON of money by not going to the dealership.”
Dragonfly Automotive
“They helped her out quickly and they gave us a great price.”
Convoy Auto Repair
“Costs for parts and repairs were discussed with me and services were completed in a timely manner.”
Allman Family Auto
“First came here for an oil change and I have been coming to Allman Family Auto for the past 5 years, I have found my forever mechanic.”
Suspension Plus Automotive Repair
“I made the mistake of taking our car to another shop (big mistake), rather than taking it to the reliable, honest, and qualified technicians at Suspension Plus.”
Bowman's Garage
“My oil change was done pretty fast and I left with a full diagnosis of my car.”
Top Care Auto Center
“Honest guys, shoot you straight, and aren't trying to overcharge at every turn.”
Robert's Auto Service
“I am very impressed wirh their excellent customer service and diligent work.”
The Truck Shop: Toyota/Lexus/Scion
“James and the crew are easy to work with, have a ton of patience for my lack of knowledge, and I'm able to trust their advice and recommendations without having to ever worry that they're trying to upsell me.”
Qwik Auto Center
“I've had everything done here including tinting windows to replacing major car parts and they have always been amazing.”
Mission Village Auto Care
“They are honest and reliable and charge reasonable prices for dependable work.”
Why these companies made our list
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