Question about transmission fluid. - Hyundai Forums : Hyundai Forum
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#1 Old 12-15-2013, 02:24 PM
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Question about transmission fluid.

Does it work as the same as engine oil? how do you maintain it? do you change it every 5000 miles? My car just hit 10k miles, and I have never done anything with transmission fluid. I heard from somewhere saying that you have to flush at certain miles or years of ownership. thanks guys
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#2 Old 12-15-2013, 02:32 PM
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I think the dealership says to drain and fill every 30,000 miles. I had a flush and fill done at 100,000 miles. You wont want to do it every 5,000 miles...the tranny fluid is like $18 a quart
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#3 Old 12-15-2013, 02:59 PM
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The Hyundai Sonata auto transmission is now considered a sealed system. There is a check point but no dip stick for fluid level inspection. I would suggest reading the owners manual under service recommendation for the drain and fill timing. I believe its safe to say don't touch it until at least 60,000 miles. Flushing of the system is a dealer inspired refill method and I do not believe its endorsed by Hyundai.

The dealers will tell you anything, like 30,000 miles, where the real requirement may be 60,000, 100,000 or maybe never. I've not priced the transmission service charge by a dealer for the Sonata but would guess its around $150-200 or more. On my 2004 XG350, the dealer got me for $130 at 30,000 miles when the manual called for drain and fill at 105,000 miles. It doesn't hurt to change early, but why do so, when its not needed.

There is a lot on information on the forum regarding when to change, how to do it and etc. Do a search.

Last edited by Bobb4484; 12-15-2013 at 03:06 PM.
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#4 Old 12-15-2013, 03:45 PM
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I believe that there is an owner's manual in the glove compartment that will answer all of these questions. You may wish to read it! You seems to have several mods on the car but are asking about tranny fluid maintenance, something wrong with the picture.
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#5 Old 12-15-2013, 04:43 PM
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Really no such thing as "lifetime" fluid but if you don't plan to keep the car beyond 100k miles, I wouldn't worry about changing the trans fluid anytime soon.
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#6 Old 12-15-2013, 05:47 PM
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I paid hyudai dealership ~$170 for drain and fill on my 2012 Sonata, it was so expensive because 5 quarts of Hyundai ATF cost $100. Drain and fill for NF cost me ~$90 (cheaper ATF). I have the fluid changed every 2 years or 30K miles, whichever comes first.
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#7 Old 12-15-2013, 07:09 PM
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Quote:
Originally Posted by armtdm View Post
I believe that there is an owner's manual in the glove compartment that will answer all of these questions. You may wish to read it! You seems to have several mods on the car but are asking about tranny fluid maintenance, something wrong with the picture.
No he doesn't read the manual, nor any prior posts on here. He just makes twenty threads on the simple things he can't understand. Will likely not ever reply any further to the thread.
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#8 Old 12-15-2013, 07:16 PM
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Quote:
Originally Posted by rafciu123 View Post
I paid hyudai dealership ~$170 for drain and fill on my 2012 Sonata, it was so expensive because 5 quarts of Hyundai ATF cost $100. Drain and fill for NF cost me ~$90 (cheaper ATF). I have the fluid changed every 2 years or 30K miles, whichever comes first.
a drain and fill on a YF takes like 2 or 3 quarts... FYI

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#9 Old 12-15-2013, 07:30 PM
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a drain and fill on a YF takes like 2 or 3 quarts... FYI
So plenty old fluid remains?
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#10 Old 12-15-2013, 07:32 PM
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Originally Posted by Mikemu View Post
So plenty old fluid remains?
you said drain and fill, drain and fill is like 2-3 quarts. full exchange using a machine you want to use 12 to 16 quarts.

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