It's surprisingly easy to stick to motor oil options that are manufactured in the United States. Plenty of reputable brands ...

Royal Purple is an interesting brand of motor oil. I can't tell you the number of times I had customers bring their own purple bottles in for oil changes, all the while lecturing me on the merits ...

The best synthetic oils offer more mileage, keep the engine ... all come down to marketing. At the end of the day, it’s difficult for most vehicle owners to tell the difference between different ...

We earn commissions from purchases you make using links in our articles. Learn more. Save time and money by changing your own oil. See the best conventional motor oils here. Shopping for engine ...

and he stands by his assertion that Rotella T4 has all the vitamins and minerals an old engine needs to keep it happy and healthy. He's not wrong. Using diesel oil isn't a bad idea in older ...