South Lakes Sunoco
“South Lakes Sunoco always gives me good professional advice and service and completes the work on my car quickly.”
Best Coolant & Radiator Flush near Ashburn, VA
These mechanics serve Ashburn from nearby bases in towns including Chantilly, Sterling and Herndon.
15 mechanics listed · 6 open weekends · 14 rated 4.5+
Data verified October 16, 2026
Elden Saint Service & Tire
“I came in for a flat tire repair and emissions inspection, and the staff were very friendly, professional, and welcoming.”
Porsche Chantilly Service and Parts
“Great service from the ease of setting up the appointment to drop off and pickup.”
Honest Tom's Auto Care
“Vick communicated with me throughout the process, explained what they checked, and even asked me to bring the vehicle back and leave it with them so they could spend more time diagnosing the problem.”
GT Peace Automotive
“First time working with GT peace and they were able to do everything I needed and were knowledgeable and friendly along the way”
Stone Springs Auto Center
“I went to Stone Springs Auto Center and, despite it looking like a small "repair" (hitch removal), the owner asked that he write up a ticket after assessing the issue.”
Listed for drivers in and around Ashburn, VA, 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: Ashburn, VA
The 15 mechanics on this page are rated from 4.4 to 5.0 across 7,994 reviews; 14 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price", "diagnosis" and "honest". 6 are open on Saturdays and 1 on Sundays. The services the mechanics on this page list most often on their websites are audi repair (2), bmw repair (2), mercedes repair (2) and transmission repair (2). 5 list staff certifications (ASE) and 4 have a BBB rating of A or A+. Domain records put 11 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; 7 are family- or locally-owned and 7 list coupons or special offers. 1 has Spanish-speaking staff. We have a website on file for all 15 of the mechanics on this page; 14 publish a contact page; 6 list a public email and 11 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.
Can I book a coolant change online with shops listed for Ashburn?
Online booking is offered by 11 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.
J & L Automotive
“John is a wealth of know how and brilliant with diagnosing problems, recommending the most cost effective repairs.”
Fallon Automotive
“I dropped it on a Wednesday afternoon for a Thursday appointment, but they called me Wednesday evening and told me they already diagnosed and fixed the issue!”
Ashburn European Service Center
“As an engineer I appreciated their inspection with photos provided, it was a nice touch.”
High-Tech Auto and Truck Center
“Been taking cars to them for over a decade, rarely if ever have any issues with their work.”
D&D Automotive Repair
“We switched over to using them a few years ago and the car is running great and we are very happy.”
Dulles South Automotive
“He called exactly when promised the next morning, explained that the tire needed to be replaced, confirmed they had it in stock, and had the car ready by lunchtime”
Precision Import Service
“They fixed the issues as quickly as possible and I ended up paying about one tenth of what the dealership quoted me.”
Main Street Tire and Auto
“Matt and his team did an outstanding job of not only fixing my car, making it safe and educating me on what needs to be done and what could wait.”
Loudoun Auto Works
“Service was quick, the staff were friendly and knowledgeable, and the price was fair.”
Why these companies made our list
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