I can't count how many Hyundai AT's that I've replaced just because some idiot forgot to read the manual that says only SP-III fluid.very true...anything else and your warranty is gone!!
Some manufacturers do use different fluids specific for the transmission. While all Hyundai's except the Veracruiz and Genesis use SP-III, the Veracruiz uses a Toyota fluid on the 6 speed auto since that is a Toyota transmission. The Genesis either uses the same Toyota trans or the ZF trans (which requires its own fluid) that is also found in some BMW's. The GM Allisson trans does not use Dexron, but has its own fluid.Why is it stupid? Most manufacturers are now using brand specific fluids.
Filter too. HD's have the internal filter.every 30k its recommened to have a full fluid exchange...if not then you can do a drain and fill.
I said a drain/fill with a filter at 15K. at 30K, a flush then at 60K a filter change (if it has one that can be changed). The XD's do not have a filter that you can change. The GK is the same way as the XD's. The NF Sonata and the Azera also does not have a filter you can change.15k is a little extreme especially when you have to use 12quarts for a flush...
btw the xd (except early 01's) have an internal filter as well.
What I did w/o a flush machine was undo the feed line after the trans cooler, put a longer hose on that with the one end in a bucket and as the engine is running, and the fluid runs out, I'm refilling it via the dipstick tube. What HMA does recommend is running the engine for about a minute without pouring new fluid in to drain the system. However, this is something I'm not comfortable with. I'd rather pour new in as the old runs out.the early EF sonatas you could change out the filter 00 and 01 iirc
i have did a flush at 30k on my wifes and its due for another one...i have the 12quarts...but no flush machine at the moment.
Manufacturers can be wrong too. After a rebuild or new trans is put in, there is more break in material that needs to be removed from the trans. They all have this; my Accent, XD, HD, and all transmissions that I have replaced with new/rebuilt units. A flush machine cannot remove ALL of this excess debris. It only gets some out. Also, the flush machine is dependent on the flow of fluid through the hydraulic circuit and through the filter. Excess debris can actually clog up the filter while you are flushing it. By doing a drain/filter change/fill will remove the majority of the debris (especially if the trans is hot) and the next change will have less debris to contend with.must have been something at the factory then....i cant imagine it being that clogged so fast....
according to hyundai they dont need to be replaced untill 100k iirc