The "SP" series refer to proprietary Mitsubishi-licensed ATFs. (Proprietary ATFs,
i.e. "Mercon V" for Ford and "ATF+4" for DaimlerChrysler are a fact of of life these days...) In addition to Mitsubishi AT-equipped vehicles, Hyundai also utilizes these fluids as factory and service fill in AT-equipped vehicles manufactured since at least 1999 - and perhaps prior to that. The older "SP-II" was superceded by "SP-III" about a hear and a half ago as factory fill in Hyundai ATs. Hyundai issued a TSB about a year ago that directed Hyundai service personnel now use the SP-III ATF in all applications formerly specifying SP-II ATF for improved shift-quality, but the the bulletin made it clear that SP-II would not affect transmission life. The only sources I've found that distribute genuine SP-x ATFs are Mitsubishi, Hyundai, and Kia (itself a Hyundai company), and I'm not even sure whether SP-II ATF is still available. The Kia dealership in my area charges $3.95/qt. for their SP-III ATF. (and if I remember right, the Hyundai dealership quoted $4.69/qt. But,
$5.99/qt. at Mitsubishi!) I can only speculate on the chemistry of the SP-III ATF, but since Hyundai advises that the fluid is supposedly good for 100,000 miles (Take
that with a large grain of salt! Mine'll come out at 15,000 miles in my 2003 Sonata.), it probably is at least a semi-synthetic with a heftier dose of friction modifiers than SP-II. If your friend has the 10 yr./100,000 mile Hyundai powertrain warranty, I'd hesitate before pouring an unlicensed substitute ATF into a Hyundai AT. (But, then, you're only dealing with a friend's car, whereas, I'm dealing with
my car...
)
[ September 17, 2003, 03:32 PM: Message edited by: Ray H ]