Automobile(s): 1991 STS, 1992 Fleetwood, 1987 Maxima wagon
Bay City, MI
Re: 4.9L Oil Consumption
Anyway, back on topic... '91 STS (almost 94K) goes through about a quart every 600-800 miles and I've seen black smoke in the rearview mirror occasionally when I give it the beans. '92 Fleetwood (114K) has needed nothing between changes. 5w30 during winter and 10w30 during the summer.