I have been rebuliding Transmissions for 23 years and have Never Heard of this transvex. Your 2003 Mitsubishi eclipse Should only have DIAMOND ATF SP III or equivalent used as a replacement fluid while changing the fluid.
Now I,m not saying that this transvex is not an equivalent, I have just Never heard of this . again I,m a Full time Bulider/Foreman at a High Volume Transmission Facility
If you could get me another Manufactuer`s name it might help.
The "transverse" Fluid also known as "Versatrans". Fluid I Have reshearched is a Generic blend of Front wheel drive Synthetic Transmission fluid, That will work As well as Factory Fluid (No Worries)
The Site that i have Posted below will enlighten you as to the Benifits of this oil