Royal Purple's vivid motor oil doesn't just promise protection — it sells performance in a bottle. With claims of it being stronger than conventional oil, better oxidation resistance, and a Synerlec ...

When shopping for and researching the best possible oil for your car, two options will likely come up a number of times: Royal Purple and Pennzoil Ultra Platinum. While oil specifics might not matter ...

It's hard enough to understand things that you can see. For instance, electronic fuel injection, Rubik's Cubes, and those with the double-X chromosomes. As utterly baffling as they may be, things get ...

It’s no secret that rotary engines make more heat than a pizza oven, and the Renesis in our RX-8 is certainly no exception, even in naturally aspirated form. Now that we’ve decided to add some ...