I just bought Motorcraft Mercon LV at my dealer for just over $5 per quart. I Have used Maxlife LV in the past, but the Motorcraft seems to have smooth out the shifts that I had attributed to the tuner that I installed about the same time as the Maxlife. For the price, Mercon LV is $2 per quart cheaper at the dealer than it is at OReillys/Advance, I've decided not to use anything other than Motorcraft. Just an opinion!