Changed the trans fluid on my 2017 Optima EX 6 speed auto. 32,000
Did it in my driveway. It took a few special things to do it right. One thing was you have to be careful jacking the car up not to bend the jack seam under the car. Easy to do. So i found the correct rubber adapter for my floor jack on Amazon. It fit on my Craftsman 3 ton jack perfectly. I was able to safely jack up the front seam behind the front wheel but I had to cut off the end of the rubber cap as there's a square void by that seam that allows you to jack the car up without bending the plastic body. By cutting the end of the cap off it fit perfectly in that void and could jack it up with no issue.
Took the air snorkel off and you can use a 1/2 inch bare ratchet end to remove the trans top fill cap. Then the hard part comes taking off the 3 underside covers on the bottom of the car. Its about 20 bolts all the covers have to come off to get to the trans.
You can almost take the side eye hole cap off with your fingers its not on tight. Only turns a about 3/4 and its off. Its a plastic cap. Open up the 23 mm dump bolt on the bottom and it dumped out 3.5 quarts. I was hoping to get more out of it think it hold 6-8 quarts? Fluid did not look to bad reddish black but the dump bolt magnet had quite a big blob of wear gunk on it.
I cheated and did the easy way to fill it. I measured exactly what came out and put that back in plus another 1/4 of quart in it. I bought a long metal funnel to put the fluid in. If your not leaving the side eye bolt open like me you just have to make room for the trans hole to breath as you pour in new fluid. Pour it in slow.
Buttoned it up trans runs great. Shifts perfect. Was worth it to get all that magnet wear crap off. Probably do it again in another 20,000 miles. I bought a gallon of Kia Type M trans fluid.



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