You could just switch brands. Did it ever consume any oil prior to this? Valvoline EP 5w30 is on the thicker side. They don't give Noack, but I suspect it would be pretty good at around 7-9% if I had to guess. VI is low, HT/HS is 3.2 for this oil. Then again, Noack doesn't correlate to oil consumption all that well which is why they're revising the test for GF-7.