J julio New member Nov 1, 2011 #1 Mazda Protege 1.5 liter.. it has 108k miles... the guy at auto zone told her that the castrol gtx 20-50 would be good for it.. but im thinking it should be 10-30 oil.. Is the 20-50 actually good or was that guy just wrong?
Mazda Protege 1.5 liter.. it has 108k miles... the guy at auto zone told her that the castrol gtx 20-50 would be good for it.. but im thinking it should be 10-30 oil.. Is the 20-50 actually good or was that guy just wrong?
