Accurate Auto
“Accurate Auto quoted me a little over $200 for the same test but after doing further diagnostics, determined it wasn't needed and instead took a different approach, costing much less than Audi.”
Best Transmission Fluid Change & Flush near Lake Oswego, OR
3 of these experts are based in Lake Oswego; the others serve Lake Oswego from towns including Portland (9 mi), Beaverton (7 mi) and Milwaukie (3 mi).
6 open weekends · 22 rated 4.5+ · 2 show a license
Data verified October 16, 2026
Dan's Auto Center
“From the moment that I called them on the phone to the moment that I picked up my 24-year-old minivan after repairs, I was blown away by their professionalism, attention to detail, honesty.”
Grimm's Service
“A family business smaller than the large motor car maintenance companies but makes up for it with personality, knowledge, one on one care, and no run arounds.”
Jay's Garage
“Despite the fact that job I had performed was complicated and very labor intensive, they were within 5% of the estimated price for the job and quoted a more affordable rate than other shops with experience working on Volkswagens.”
Hillside Imports
“In my opinion Hillside imports is #1 for Volkswagen repair and for everything you want and need aftermarket, me and my family all drive Volkswagens and we've been very faithful to Hillside, do you need more of a reason to give them your car keys?”
Beaverton All Transmission & Auto Repair
“Jim was honest with me about what was going because he was understaffed the days that I brought my wife's car to it had 2 transmission codes we waited a day and a half so I went togo talk to him about the codes he gave me an option of going somewher...”
Listed for drivers in and around Lake Oswego, OR, these 24 shops change and flush transmission fluid. What each one says about fluid brands, filters and pricing comes from its own website; ratings and quotes come from public reviews.
Area overview: Lake Oswego, OR
The 24 experts on this page are rated from 4.2 to 4.9 across 8,363 reviews; all 24 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these experts on specific qualities, they most often praise professionalism (93%), quality (81%) and value (76%). The topics that come up most in reviews of the experts on this page are "diagnosis", "honest" and "communication". 6 are open on Saturdays and 1 on Sundays. The services the experts on this page list most often on their websites are oil change (6), brake repair (4), engine repair (4), timing belt replacement (3) and transmission repair (3). 2 show a license on their websites; 10 list staff certifications (ASE) and 22 have a BBB rating of A or A+. All 24 have ten or more years of experience, the longest 56 years. 5 offer financing; 1 gives free estimates; 11 are family- or locally-owned and 16 list coupons or special offers. We have a website on file for all 24 of the experts on this page; 22 publish a contact page; 13 list a public email and 11 take bookings online. We count these figures across the experts on this page; distances are straight-line, and hours and prices change, so confirm the details with the expert before you visit.
Can I book a fluid change online with shops listed for Lake Oswego?
An online booking link appears for 11 of the 24 shops. Give them the year, make and model when you book, because the fluid has to be on the shelf and some specifications are ordered in rather than stocked.
Integrity Auto: Independent Toyota
“I talked to my father and he knows a lot about mechanical stuff and said that Integrity auto repair was a really fair price for the work that needed to be done to my vehicle they got it in and out the next day.”
Xpresso Lube
“I came from a different place that tried to upsell me on something at 3x the price so I came here to get it done - they looked and verified that not only was it in great condition, they reminded me that they changed it on my car recently.”
Orient Auto Service
“Had a leak spotted and fixed on my Tacoma, as usual im happy with Orient Auto , they do excellent work, there always the same people im dealing with not a rotating crew, very reliable , dependable, and honest.”
Hi-Tech Auto Repair
“They tested it and found that my gas cap hadn't been properly screwed in when I last got gas and that was causing my computer to read that I had a leak.”
Affordable Tire & Brake Co.
“I've been getting all of my cars serviced at Affordable Tires for about 6 years, and I've never had any problems- great service, excellent work on the cars, and I can trust the mechanics to do only the work that's needed, and to do it well.”
Gary's Auto Care & Tire Pros
“Excellent service, they were able to identify the root of the issue I was having and didn't pressure me into any additional services, just did exactly what was needed to get the car working.”
Trendsetters Truck and Auto
“If you are looking for a great shop to get your car or truck routine tires, brake job, or go for a completely new look by lowering or lifting your vehicle, then check out this place.”
Everett Street Autoworks & Mechanics
“They squeezed me in, evaluated the problem, updated all the software, replaced an air filter, cleared the codes and assured me it was safe to travel to my home.”
Steve's Imports
“Every single person who works there only wants the best for the customer and the Shop foreman David ensures all cars get what they need and makes sure the diagnostic is done correctly the first time around.”
Same Day Auto Service
“These guys worked on my car about a decade ago and I was so blown away by the quality and HONESTY of these people, that I came back about a week ago (with the same Toyota!”
Tim's Aatco Transmissions
“Evidently the other quotes I got were insanely high, and Tim turned out to be straightforward and honest because his quote came in at around half of my highest quote and something like $5-600 less than the lowest quote I'd gotten.”
MBI Motors
“I had thought about bringing my first Benz to MBI a year ago and decided to go somewhere 'cheaper' thinking I could beat the system by paying less to get quality work at a shop that doesn't specialize in Mercedes.”
Honest-1 Auto Care
“They also have a sweet deal where you can buy a coupon sheet that comes with 4 oil changes, tire rotation and some other discounts on services that is really affordable, and way cheaper than a Jiffy lube or Valvoline.”
PDX Automotive
“PDX Automotive has proven to be an efficiently reliable mechanic for our vehicles' needs, with good business integrity that doesn't push for any additional expensive work that doesn't need to be done.”
Aloha Auto Center
“Iv brought both of my cars here, they are honest, and quick, if they sense it will take longer they alway give you a heads up with more then enough time to make arrangements for the next day.”
Motorcar Doctors Auto Repair
“The team walked me through each one and told me the best way to prioritze them, so I could spread them out over time to align better with my budgetary issues.”
Accurate Motorwerks
“They make their recommendations based on their inspection but don't try to make you have anything done unless it's absolutely necessary (but still give you an idea of what will need to be done in the future).”
Affordable Car Doctor
“I had a 1998 Honda Accord for a decade and got all of the major repairs done here- I'm talking the entire water pump system, alternator, emergency radiator replacement, and they even replaced the motor in my drivers side automatic window.”
Why these companies made our list
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