Sounds like Valvoline is trying cover all the bases? Have a oil for different conditions? With Maxlife, they target older cars, Synpower is a synthetic for new or newer cars.
They might advertise this oil as daily protection for daily driving, stop and go, short trips, etc..
It would make sense for this to be a cheaper version than Synpower, because what could this oil do that Synpower couldn't do?
Valvoline seems to be tweaking things across their lineup of products. It almost seems as if they would like to have a oil for various applications. Look how there are two new diesel oils in Walmart. A diesel oil for the diesel pick-up trucks and then a high mileage diesel oil. All Fleet is no longer mentioned on their website, was it discontinued?