Reliable Smog Saint Anthony Complete Auto Care
“He really worked with me and I feel everyone would benefit and be more than satisfied taking their car here.”
Best Coolant & Radiator Flush in Rancho Cucamonga, CA
15 mechanics listed · 9 in Rancho Cucamonga · 3 open weekends · 11 rated 4.5+ · 2 show a license
Data verified October 16, 2026
Haven Auto Repair
“Everyone was so nice explaining the problems, cost and length of time needed for repair.”
Aamco Transmissions & Total Car Care
“Phillip definitely went above and beyond assisting me with all my questions and concerns!”
Rodas Auto Repair
“This place went over and behind to help me get my ride back on the road at a very decent price compared to other shops in rancho cucamonga.”
Al & Son's Automotive
“He made sure the job was done right and the service was a great value.”
Motorcooling Radiator & Body Parts
“Great costumer service very helpful and all my parts for my Chevy 2500 fit with no problems better than amazon you get your moneys worth correctly thank you Sam.”
Listed for drivers in and around Rancho Cucamonga, CA, 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: Rancho Cucamonga, CA
9 of the 15 mechanics we list are based in Rancho Cucamonga; the other 6 serve Rancho Cucamonga from Upland (5 mi), Fontana (6 mi) and Ontario (6 mi). The mechanics on this page are rated from 4.1 to 5.0 across 2,154 reviews; 11 have 50 or more reviews and 11 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price" and "honest". 3 are open on Saturdays. 2 show a license on their websites; 5 list staff certifications (ASE) and 6 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 54 years. 3 offer financing; 3 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for 12 of the mechanics on this page; 9 publish a contact page; 3 list a public email and 6 take bookings online. 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.
Which shops listed for Rancho Cucamonga discount a coolant flush?
5 of the 15 shops on this page list a coupon. A discounted flush is worth taking if the service is due and worth skipping if it is not, so check the interval in your manual first. Ask which coolant the offer includes, because the cheap one may not be yours.
The Car Guys RC Asian
“I felt like I could trust them completely with my car, and they went above and beyond to ensure everything was in top-notch condition.”
Toyotek
“Alex is a amazing human being which believes in fairness you made a great choice in getting your car serviced here.”
Alta Loma Radiator
Alonso's Auto Repair
“Always a great experience, professional and friendly.”
Lupe's Auto
“Had to leave car overnight , but the job got done right.”
Save On Auto Care
“I had the Fuel Pump replaced, they also provided legit recommendations, good pricing.”
Akbar Service
“I will for sure be back in the future and I highly recommend.”
Aamco Transmissions & Total Car Care
“I've never felt more taken care of than I did with Phillip and the guys at AAMCO on Arrow Blvd in Fontana.”
Roysautorepair IN Upland
“A great place to bring your car without having to worry about being cheated.”
Why these companies made our list
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