Yes it's true after running Auto-Rx in my Toyota 22r powered truck the oil consumption has stabilized as long as I'm not pulling my enclosed trailer. However pulling my 6 x 12 enclosed trailer for my business especially on the freeway requires full throttle in all the gears [I try to avoid the freeway for this reason] oil is consumed at an very high rate. 3/4 of a quart per tank of gas. If I spend more time on the freeway it can be as high as 1.5 quart per tank of gas. So where is the oil escaping to? Leaky valve seals?