Before changing the oil in your older car with a newer motor oil, you may be wondering if you should be adding zinc into your engine. Here's what to know.

Let’s explain all of those confusing numbers, letters and terms to help you choose the right oil for your car.

How old, you ask? Well, if you're rocking a V6 or V8 made before the mid-1980s, you're probably going to want to throw some zinc additive into your crankcase every oil change. In the pre-roller ...