Lab testing? So it does have ZF approval? That is news for me.
Maxlife is very common among BMW users in ZF6. But in ZF8 it is still sporadic.
Now, I will never understand why would anyone try to save few bucks on any vehicle. First of all, ZF (as all other transmission manufacturers) say no flush, so you are draining, what? max 10 liters (and I am taking highest amount here) which is $270. So, you are trying to save $250 on fluid you change every 60k because? It is worth transmission?
By the way, Maxlife is not as same quality as ZF8. There is a reason why ZF8 is expensive.