Having the right oil weight is important because it ensures maximum engine lubrication and protection. In colder climates during winter, a 0W-30 will have more protection at startup than a 15W-50 ...

Most modern automobile engines run with either 5W-20 or 5W-30 weight motor oil lubricating their internals. While these two oil viscosities have been shown to adequately protect an engine’s ...

Given all the options for motor oil options out there ... your car will list its recommended oil weight, whether that's a standard format like 10W-30 or something more unusual.

or weight, of the oil your engine requires. In the late 1970s, when I first started working on cars and doing engine ...

Some oils are tested at just one temperature, single-grade motor oil is just that. SAE 30-weight motor oil is tested at 212 degrees; it gets thinner when it gets hotter and thicker when it gets ...

I used 10W-40 or straight 30 weight oil in the summer and ... it can be tempting to buy a cheaper weight. Putting the wrong oil in your engine could cost you much more money down the road.

like 0W-20 and 5W-30, we'd have to use different weight oils for various climates. If you lived in the middle of the United ...