Hi. I'm coming up on my first oil change at 7500 miles. I pulled out the stick and noticed I'm at the bottom mark. I would think it's about a quart low. Does that sound normal? Do Mazdas use oil like the Subaru's? I don't recall checking it when I purchased the car but I'm guessing I would have just cause I'm that way. Also purchased from a reputable place so I would guess they would have made sure she was topped off. Thoughts? Something to worry about? Thanks! Steve