Originally Posted By: jake9364
I was told and read it also that when you change the Transmission fluid on a 2005 Hyundai Elantra and a 2007 Hyundai Tucson, you HAVE to use Hyundai's transmission fluid or you will melt the plastic in the trans! I had another person tell me, no, there is another brand that is sold at places like Autozone that is the same stuff, and a lot cheaper, is that true?
The Hyundai SP-III ATF looks in an analysis like Mercon V.
Since I have access to a number of Hyundai and Kia vehicles spec’d for SP-III, I’ve tried the following with good results:
Mobil 1 ATF
Red Line D4
Red Line C+ ATF
Toyota Type T-IV (long story)
and had no problems at all over 30 to 60 thousand miles.
