Dear Tom, I just bought a 2009 KIA Optima. The owner’s manual says I should use 5W20 oil in the engine. My dad used to fix cars and he said that this oil is too thin and that I should use “Straight 30 ...

Starting January 1, 2027, new heavy-duty diesel engines will hit the road. And when engines change, oil has to change with ...

Regardless of whether it burns gasoline or diesel, your internal combustion engine works by igniting a mixture of fuel and air to create power. To do so effectively, it must reduce the detrimental ...

Oil is a vital component for engines of all types. Not only is it responsible for providing lubrication to numerous moving interior parts, but it also helps prevent friction and the development of ...

If you've ever performed your own oil change at home or even just popped the hood to check your oil level, you may have noticed the mix of numbers and letters emblazoned on your engine oil fill cap or ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...

No truer words have ever been said: oil is the lifeblood of your car’s engine. Its purpose is to lubricate the engine’s many crucial components to ensure a long, reliable life. It’s also a consumable ...

Get rid of destructive heat with an external oil cooler for your engine, transmission, power steering and rearend. Have you ever considered how hot oil gets inside your engine, transmission, ...