Hi, in my country definetly thereīs no Diamond ATF SPIII fluid, even the dealer donīt use it. I donīt why exactly, I guess is not a good mitsu dealer. I found the Castrol Import Multivehicle, it says to meet the SPII and SPIII specification, I change it, itīs working good at the moment, my question is, It really does meet the specs this Castrol Import multivehicle fluid as the Diamond ATF SPIII?

 

So long as it clearly mentions meeting SP-III spec, there is no problem using a universal ATF.

 

I use the same Castrol Import ATF myself in my 1992 Montero. If you look on the back of the bottle it specifically lists the Mitsubishi Montero and says it meets SPIII specs.