Gunter Automotive
“I've been coming here since moving from NJ in 2022, and have been pleased AND happy with Gunter's.”
Best Coolant & Radiator Flush in Lawrenceville, GA
15 mechanics listed · 8 in Lawrenceville · 6 open weekends · 11 rated 4.5+
Data verified October 18, 2026
Sims Radiator Service
“Best prices in town and got the job done in a timely manner”
Aamco Transmissions & Total Car Care
“Roman was so patient with me and helped me all the way through the process.”
Lawrenceville Auto Center
“I recently visited the shop to get an oil change, and the whole staff is professional and transparent about what your car needs and what it will cost.”
Suwanee Service Station
“They quickly assisted me upon arrival and got me back on the road in little to no time.”
Pure Auto Repair
“Very thorough and professional mechanics who know their stuff and are very prompt.”
Listed for drivers in and around Lawrenceville, GA, these 15 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: Lawrenceville, GA
8 of the 15 mechanics we list are based in Lawrenceville; the other 7 serve Lawrenceville from towns including Loganville (7 mi), Dacula (8 mi) and Suwanee (8 mi). The mechanics on this page are rated from 4.2 to 5.0 across 3,631 reviews; 12 have 50 or more reviews and 11 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (95%), quality (80%) and value (75%). The topics that come up most in reviews of the mechanics on this page are "honest" and "warranty". 6 are open on Saturdays. The services the mechanics on this page list most often on their websites are brake repair (3), engine repair (3), air conditioning services (2), air filter replacement (2) and cooling system (2). 4 list staff certifications (ASE) and 1 has a BBB rating of A or A+. 11 have ten or more years of experience, the longest 44 years. 4 offer financing; 1 gives free estimates; 7 are family- or locally-owned and 9 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 Lawrenceville?
Online booking is offered by 6 of the 15 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.
Central Diagnostic Auto Repair
“They repaired almost all my cars from the Corvettes to the Porsches.”
Mobile Air Parts
“If you need parts or need it fixed call them.”
A & B Diagnostic Auto Repair and Sales
“I have taken my car here a few times and every time my car has been taken care of by Richard!”
European Service Center For Audi
“The team worked quickly and were honest about work that didn't need doing.”
Full Line Auto Care
“They are professional, precise, and keep you informed on what is wrong with your vehicle and the exact work that they did to your vehicle.”
Joey Watkins Tire & Automotive
“When you do need mechanic repairs they perform a thorough diagnostic and if they believe it needs an engine or a repair out of the “general repair” category they won't even charge (I've been there unfortunately).”
Auto-Fast Lube & Detail Center
“They help me quick and not to expensive I wanted to change my tire the dude it was still good I can fix it.”
Knight's Auto
“Knowing that I was from out of town he actually stayed after hours on a Saturday so that I could get home on time.”
Aamco Transmissions & Total Car Care
“The transmission in my Jeep Grand Cherokee had to be rebuilt and he was so informative and polite and make me feel comfortable the entire time my car was there.”
Why these companies made our list
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