To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

The pressurized wetsump oiling system on most production vehicles will look like this. Oil is stored in the oil pan and sucked into the oil pump (which is also located in the oil pan) to be pumped ...

About the only attention most people give to engine oiling is a fresh filter and four or five new quarts of 10W-40 every couple thousand miles. For serious engine builders, however, the intricacies of ...

Racers are a picky bunch. We scrutinize parts and sweat minute details down to the thousandth of an inch. We painstakingly gap spark plugs, set valve lash, and carefully select the brand and weight of ...

Drive a few HPDEs or drag races and it won’t take long to figure out that your car’s performance bottlenecks aren’t really about power or torque—they’re about oiling. A built small-block with bonkers ...

The old adage of "Old Harleys leak" isn't indicative of reliability issues. Rather, it can signal the model year and ...

Note: This is the third in a series that looks at the diesel particulate filter and maintenance best practices that an impact its lifecycle. The first installment, "Diesel coolant heaters boost DPF ...

Your engine doesn't enjoy oil starvation. Sure, you could run dangerously low on oil and get away with it, but don't count on it. Let the oil flow, friends, whether your vehicle has a normal wet sump ...

Recently, GM hosted an event where engineers from the Chevrolet Corvette and Small Block programs gave a three-plus-hour presentation on the LT6, the engine powering the new C8 Corvette Z06. The most ...

We earn commissions from purchases you make using links in our articles. Learn more. Most drivers know that regular oil changes are necessary to maintain the life and performance of their vehicle. For ...