I f you're a driver of A Certain Age like I am, you may remember that, back in the day, car engines used heavier oil. You're ...

However, if your car normally requires the use of 5W-20, it's dangerously low on oil, the only motor oil you have available is 5W-30, and you must drive it, it's better to add the 5W-30 than it is ...

You're not imagining things here, this isn't some kind of Mandela Effect thing where we've always used 5W-20 despite you remembering otherwise. For decades now, automakers have been recommending ...