Yes, no problem. The blended oils are rated that way to indicate they will function in varying temperature conditions (i.e. summer/winter), with the high value associated with high-temp/reduced viscosity and the low value reflecting low-temp/high viscosity (hot and thin vs. cold and sludgy). Thus, the more extreme-range oils would be good for colder climates, such as the northern region of the U.S. In your neck-o-the-woods, 80/90 is plenty-fine... <img src="/forums/images/graemlins/kewl.gif" alt="" />

1997 Sportage 4x4, auto-trans, Warn manual hubs, 4" UPYOURKIA front lift, TJ 106AA rear springs, 2-5/8" body lift, 31x10.50 treads, SmittyBilt SRC front and XRC rear bumper, swing-out tire mount, OBX LSD front diff, Track Finder rear locker, 5.38 R&Ps and... really crappy gas mileage! <img src="/forums/images/graemlins/shiner.gif" alt="" />