i saw yet another post about someone being a little nervous about switching to something other than nissan fluid in their auto tranny on a 05+ frontier and i think that for alot of people here nissan atf is a touchy subject and i want to try and eliminate everyone's fears of using something other than nissan fluid or atleast give you a little more knowledge about what it is your putting into your tranny. For starters matic j, this fluid is a semi synthetic JASO 1A spec ATF actually made by Castrol and sold to nissan who then puts their name on it and slaps all the dire warnings on everything in their vehicles about it but the fluid is nothing more than Castrol Transmax J which castrol made to work in all JASO 1A spec Japanese auto trannys. JASO 1A spec is the main Japanese standard for ATF and this castrol fluid is used by nissan and subaru and is good for use in Toyota T-IV and Type T fluid requiring transmissions. This fluid has also been approved for use in applications that call for Allison C4, Dexron III, and Mercon. Castrol TransmaxJ Product Data Sheet

Some more JASO 1A spec equivalents to this fluid are Pennzoil ATF-J and IDEMITSU ATF HP which is the fluid used in Japan for our trannys

There are also plenty of Universal ATFs that can be used and what makes these so universal is that they are actually just fully synthetic ATFs that are made to JASO 1A spec which you have see above that JASO 1A spec fluids have been aproved for use in Dexron III, Mercon, Allison, and is suitable in toyota t-IV and type T along with many other trannys from many other companies. The Japanese standard of JASO 1A spec actually far exceeds the standards of most other ATFs that manufactures require for their trannys which pretty much makes anything that is made up to JASO 1A spec a universal ATF so don't let yourself get turned off when you go to amsoil's website and look at the Universal ATF and see a massive list of compatible applications, when you look at this list and wonder "how does this fluid work in all these applications" its because the Japanese standard of JASO 1A spec is far superior to fluids of any of these other applications to date. once again the best of the best comes from japan! There are however some applications that JASO 1A spec fluids do not work in and most Universal ATFs are not recommended in or have not been fully tested in like Ford Type-F, Dexron VI, and any CVT tranny

a few universal ATFs that you can breath easy about switching to now are Amsoil ATF, Motul ATF-1A, Mobile 1 Synthetic ATF, Amalie Universal Synthetic ATF to just name off a few that i can think of off the top of my head.

i hope this little write up will help shed some light on the somewhat touchy subject of ATF and maybe help any of you that are kind of on the fence make a decision about what you which to run when the time comes for tranny service on your 5 speed auto frontier. Thanks for reading