Originally Posted by gtx6970
Ok, hear me out as you guys are gonna think Ive lost my mind.

Drove the car to a local cruise nite last weekend. approx 90 miles round trip, some hiway some inter city driving . Car used just a tad under a qt of oil round trip.
Oil is now straight 30wt with a ZDDP additive

Drove it yesterday to Phoenix ( taking an extra qt of oil with me to top it off when needed. ) just a click over 350 miles ROUND TRIP .........

I ckd it about halfway back on the return trip , was maybe MAYBE a tad over 1/2 qt low. Ckd when I go home and its still less than a qt low. Shows right above the add mark.
Both times I verified it was right on the full mark when I left


WTH ????????


Have you tried leaving it a quart low to see if it would drop lower?