With so many available motor oil brands and several labels like "synthetic blend," "full synthetic," or "conventional," the process of choosing one for your car has now become somewhat tedious. It ...

My Audi requires 5W-40 oil. I use Mobil 1, full synthetic. I have some 0W-40 left over from a previous vehicle. If I mix equal parts of 0W-40 and 10W-40, will that make 5W-40? Probably. I don’t have a ...

You're staring down two shiny jugs at the auto parts aisle. One says semi‑synthetic, the other full synthetic, and you're thinking maybe they're basically the same, right? Maybe that's just a ...