Originally Posted By: Jimzz
Not sure, I think its just a semi-syn. But you can use Valvoline Maxlife in that trans and its synthetic.
Actually that's the new SP4-M. It replaced the Hyundai IV fluid. So it might be a basic synthetic. But I still use maxlife in Hyundai's.
They (both Hyundai/Kia) updated from SP-IV to SP4-M a few years ago and this made the switch to a full synthetic OEM ATF. It is fully compatible with the older SP-IV ATF fluid. Since the drivetrain warranty is 100K miles, I'd just stick with the OEM fluid. When I did my drain/fill, the SP4-M was not out yet but the OEM ATF was like ~$9 quart at the local dealer.
Whatever you use, if you do the basic drain/fill every 30K miles or so, I'd think your golden.
I did also add a 3/8" Magnefine transmission filter (in-line) back at ~8K miles with good results thus far.