Unless you drive an older car. My 14 year old Saturn's oil was rough when I changed it at 3200. I can probably take it to 5000 now that it has synthetic blend i

Unless you drive an older car. My 14 year old Saturn's oil was rough when I changed it at 3200. I can probably take it to 5000 now that it has synthetic blend in it, but I'm not going to take a chance with a 154,000 mile old engine.