2007 Kia Sedona - transmission fluid replacement - Page 2 - Kia Forum
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post #11 of 13 (permalink) Old 02-05-2012, 10:19 AM Thread Starter
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Would it be beneficial to do a DIY drain and fill or will that not really complete the job? What I'm getting at is whether it makes sense to pay for a full flush and fluid replacement, or if that isn't worth the expense and my own drain and fill will be good enough.

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post #12 of 13 (permalink) Old 02-05-2012, 05:46 PM
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Hi Lobster70,

If there is not much miles on the engine, I would drain and fill every next oil change. For high mileage and hasn't been service for a long time, I would flush it only if you are sure whoever doing it is trustworthy and knows what he is doing. I would encourage you to stand there and watch the whole process. From then on, you can go beck to the drain and fill routine.

You can flush DIY if you are brave enough; the Valvoline book at Pepboys suggests "remove the transmission hose from transmission to cooler, start the engine for 1 min or until it stop draining, then fill the new fluid at the stick hole".

I had don't a similar flush on a Honda Odyssey and it seems at least replaced 90%. What I did different is first drain and fill, pump out the amount refilled, stop the engine and refill; then repeat the process until the total amount of oil the transmission would hold is pumped out. The oil would look really clean when it is done. You will need another person to start and stop the engine or you will make a mass.

Hope this helps,
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post #13 of 13 (permalink) Old 02-16-2012, 12:54 PM
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Originally Posted by Lobster70 View Post
I plan to check there. What should I expect for cost? I have warranty work planned for this week and figured I'd buy there if it's cheaper. I see that the capacity is 11.5 quarts so it's worth comparing!
11.5 qts is the capacity if you drain the trans and torque converter. Most are 6-7 quarts with a simple drain plug remove and refill. The only way to drain the torque converter is to remove the trans and pull out the torque converter. Besides that a flush is the only way to truly drain and replace the fluid in the torque converter with out physically removing the trans from the car
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