Red Line has a high temp ATF for Dex3 usage at 9.5cst
Torco HiVis is 8.3cst
Castrol highmileage transmax shows 8cst
And then there is lucas honey to make any ATF thicker:
Lucas Transmission Fix is a non-solvent formula that stops slip, hesitation and rough shifting in worn transmissions and completely eliminates most seal leaks. Use in any transmission for preventative maintenance. Lucas Transmission Fix is a non-solvent formula that stops slip, hesitation and...
MaxlifeMultivehicle has always been a thin ATF since it covered LV applications. They did also sell a Maxlife/Stopleak/DexMerc along side their Maxlife synthetic years ago. Many confused the LV with the Stopleak ATFs, since both were in the red bottle.
Valvoline 6.9cst and Castrol 7.4cst import ATFs are available if you want a 'standard' viscosity fluid. Pennzoil has a highmileage Platinum ATF at 7.2cst.
Any Mercon-V is an easy choice for Nissans calling for dmatic/dexroniii. No need to smoke the budget on the ol' transmission, that might just function better with a higher cst starting point.
Mobil1 ATF is an easy choice.