No, they don't.
Only Valvoline manufacutes ATF+4.
Think about this:
Only Kleenex(tm) actually manufactures Kleenex(tm).
However, there are many brands of 'facial tissue' that perform the same function.
Any tranny fluid that says ATF+4 on the bottle, is only ATF+4 compatible. (unless it's made by Valvoline.
Check the MSDS sheets. They hold the patent.
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