In a standard transmission fluid change (also called a transmission service), the transmission oil pan is drained and refilled, the engine is run and then the fluid (oil) is topped off as needed. In a power flush, a machine uses pressure to pump new fluid into the running transmission while the old fluid drains out (a practice some vehicle manufacturers caution against). These are separate procedures, but either one might be referred to as flushing a transmission.
Typical costs:
Expect to pay $75-$150 or more for a standard transmission fluid change. This typically includes replacing the filter, and generally uses about 5-7 quarts of fluid. It does not replace the 5-8 or more quarts of fluid trapped in the torque converter, so old fluid will mix with new. Some experts recommend draining and refilling three times, so the fluid is completely changed.
Flushing a transmission with a pressurized machine can cost $125-$300 or more, and may include pushing a special cleaning compound through the system. The power flush process typically replaces all of the transmission fluid, and can require 12-22 or more quarts.
Prices vary depending on the procedures used; the make and model of vehicle; and whether the work is done at a standard repair shop (either independent or part of a chain) or at a car dealership -- and prices can be considerably higher for luxury or exotic vehicles. For example, CostHelper readers report paying $90-$378 for a transmission flush at a oil-and-lube or auto repair shop, at an average cost of $160; or $77-$295 at dealerships, at an average cost of $205; and a CostHelper reader in Nevada reported being charged $766 for a transmission fluid change on a Lamborghini Diablo.
For a standard transmission drain or service, a drain plug in the transmission is removed and the fluid is allowed to flow out into a pan. CarReality offers a how-to video[1] .
For a power flush, typically the machine is connected to the transmission, and the vehicle is left running during the flushing process; the exact process will vary depending on the machine used. Machine manufacturer Wynn's has a video demonstration of a flushing machine[2] .
Debris dislodged by a power flush sometimes clogs the transmission or the pressure might damage the seals (although not all flush machines use high pressure). Many manufacturers recommend draining and replacing the transmission fluid periodically, but do not recommend a power transmission flush. For example, Honda[3] warns against transmission flushing, saying there is no benefit to a power flush and it could void the warranty.
Discounts:
Do-it-yourselfers can save money by draining and replacing their vehicle's transmission fluid. AutoMD.com provides general how-to instructions[4] and estimates the project as moderately difficult. The main cost is the quarts of new transmission oil. CostHelper readers report paying $40-$175 for do-it-yourself supplies, with an average of $90.
Shopping for flushing a transmission:
Always check the maintenance schedule listed in the owners' manual before ordering a transmission service or flush; some shops may recommend these procedures before they are needed. Consumer Reports lists transmission flushes among the "extra and often unnecessary procedures"[5] that might be considered auto-repair rip-offs.
The National Institute for Automotive Service Excellence provides a searchable directory[6] of certified shops.
Consumer Reports lists tips for finding a good mechanic[7] .
7 Lesser-Known Discounts for the 50+ Crowd As they age, members of the Baby Boomer generation don't like to admit that they're senior citizens, but they love getting discounts. It's kind of a quandary, because some of the best deals available are reduced prices for older folks. || Posted October 21 2013
7 Ways to Stretch Your Reduced Food Budget End of the year budgets are tight for everyone, especially in this economy.It's especially hard for the millions of Americans who depend on government programs like food stamps to help make ends meet. || Posted November 11 2013
I was quoted a 260.00 + tax price for transmission drain and they would do it twice because I am near the 60K mark. If it was 30K they would only have to do this once. They said if draining twice, all the old will be out. They said they do not do flushes via machine or power flush so the article is true.
I own a Dodge Challenger and it seems like everything on the cost a fortune but not at Valvoline they have the Best service ever.and are cost friendly and very through thank you to the men and women that work work there.
Had a leak where the left axis enters the trans. They replace them bushing and seal. While on the lift, I asked them to flush the trans, since it had 95000 miles in it.
A transmission flush does not change all the fluid and it is not a power flush in the way you think. The most used procedure simply supplies fluid to a disconnected cooler line at the radiator & when the engine is started, the transmission's pump draws new fluid into the transmission where it mixes with the old and then is expelled via the 2nd cooler line. It has estimated a typical flush replaces 63% of the old fluid. Naturally the more new fluid that is used in the flushing process the greater the percentage that is replaced, but that gets very expensive and the benefit is questionable.
Posted by: Bob Couldwell in Victoria BC Canada, Other.
Posted: October 29th, 2015 10:10PM
Car Make: Toyota
Car Model: Camry
Auto Shop: Myself
Type of Fluid: Vavoline
I changed transmission fluid as follows: Warm engine to operating temp. Remove pan drain plug and drain fluid, replace drain plug refill transmission to correct level. Disconect return line from cooler to transmission and put itinto bucket or drain pan. Start engine and remove 1 quart shut engine down refill transmission with 1 quart. repeat procedure approx. 3 times or when the oil that is being pumped out is clear.DO NOT RUN TRANSMISSION DRY Reconnect line. Check fluid level, run engine for a few minutes then recheck fluid level. Total cost $50.00 for fluid
This is my 5th flush an I have 306K miles on my automatic transmission. My flushes have cost anywhere between 120.00 and 191.00. Flushes seem to keep going up over the years. I am going to shop around next time.
It is my boyfriend's car,and it is a 2010 with 39,000 miles on it,and they flushed his transmission twice,and charged hi twice for it. Would like to know why it needed to be done twice?
Posted by: highland and fountain in los angeles, CA.
Posted: August 6th, 2012 11:08AM
Car Make: ford
Car Model: focus zx5 2002
Auto Shop: oris tire & service center
Type of Fluid: dextron& ft-1
had transmission fluid changed, replaced transmission filter and pan gasket also. first time done since 2005. mechanic test drove the car first and then did the service. took about 2 hours to get car back in time for work.
My transmission pan was leaking. I'd never changed the filter on this transmission so I figured it was about time. I pulled the transmission pan and found there was no gasket, just gobs and gobs of silicone and overtightened bolts. Cerritos Dodge last touched the transmission for warranty work years ago and some Butcher did the gobs of silicone and overtightening of bolts.
Bought trans filter, gasket and trans fluid. Already had the silicone to lightly coat the pan gasket. I torqued the pan bolts to factory specs. Did the job in late July and still dry, no leaks.
It was $24 for the transmission filter and $31 for the three gallons of tranny fluid. The pan gasket is reusable and I had the hi-temp silicone. It's messy DIY because tranny pans generally don't have a drain plug, so all the bolts have to be loosened and the fluid eased out before taking the pan down to get to the filter.
they are pushing a B&G chemical for a flush why now? i have 90,000 miles and had it replaced at 60,000 without any chemicals fluid looks very clean. thanks
Went in for an oil change, tech showed me oil(red)and transmission fluid (black). Told me that the transmission fluid needs to be changed soon because it is black and he can see metal shavings in it. Told me that over time it will affect how it shifts gears. I went ahead and had it done.
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.
CostHelper Community
UTI urgent care visit Paid: 147.00 Visit was $135. Antibiotics was $12. Waiting for four hours in the waiting room and the visit was quick... [more]
Spanish Medical Interpreter Paid: 150.00 I worked with SynShyne Services out of Monroe, NC. They were so worth the price! Professional, friendly, accurate, great attitude and always on time. I recieved an itemized report after every contact and a user friendly invoice weekly... [more]
Skin prick allergy test Paid: 573.00 Took my 9 yr. old in after an allergic reaction to eggs. Several panels for nuts, fish & top 8 allergens. Sure enough, egg came up. Got a script for epinephrine and left... [more]