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magyarbacsi -> RE: Tranny fluid and maintenance, Accent (2/17/2007 11:56:31 PM)
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I'll try to address some of your questions based on 07 specs for Hyundais.
First off, is there a warranty issue, i.e. is the car still under factory warranty? If so then you have to follow whatever your maintenance schedule requires. You can always call your local Hyundai dealer and ask what the schedule is. Generally the trany fluid should be changed every 30k or 24 mos. If you do a lot of towing then more often. As far as the fluid type, Hyundai has their "special" tranny fluid that you have to use. They claim in an emergency you can add Mercon or similar , but must remove, flush and then use their fluid as soon as possible. If not under warranty, I'd still use their fluid (at $6.00 a quart,)as it is designed to use that fluid.
Do you need a flush? Depends on the color of the fluid in there. If it is still clean and not burnt, you can drain the fluid thats in the tranny and just add new fluid, but I'd remove the pan, clean it and change the filter first. I dont know how big of a task that is since my cars are both new and have the factory warranty so I'm stuck having it done when the time comes. I'd hate to give them an excuse for not honoring a 10 yr/100k warranty. If you have contamnated fluid then you should have it flushed to remove the fluid in the torque converter as well. Again, if there is warranty existing and you want to keep it, have it done by an approved garage and make sure you keep receipts.
If you just bought the car and dont know the maintenance history, I'd have it flushed just for peace of mind and just change it every 2 yrs. Hyundai trannys are finiky just like most later imports and some fluids are not compatible with internal components.
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