I just did a ATF change on my Hyundai Tucson 2006 which had ~ 195 000KM. The fluid was a tad dark and smelled a bit. I read at first if the fluid was in this condition changing it (as in draining only from pan, not flushing it) wouldn’t cause much issues.
But reading more info I’m getting more and more paranoid and also on the type of fluid used to. Manual calls for SP-III. Visited dealer since couldn’t find anything near me, they assured me PENNZOIL PLATINUM LV MULTI-VEHICLE ATF should be fine to use and mix. It’s what they have at the dealer and sold me and they told me because they are switching suppliers for their oil and stuff that there isn’t an Official Hyundai bottle and label.
So I just want to know, if it turned out to cause an issue, what would be symptoms that I should probably drain it out and get it checked. I drove it a bit hard and all and didn’t really hear any grinding or odd noises and the car moved as before. The only thing is shifting from Park to Drive car has a small clunk noise but I believe it was like this before.