Motor oil comes in a variety of forms, designated by pairs of numbers, but the most common two are 10W-30 and 10W-40. What's ...

So among the banned oils, motor oils labeled 10W-40 had viscosity measures that were "widely and unacceptably" in contrast to the industry standards of 10W-40 motor oil, the state said.

You don't have to go to a mechanic to have your car's oil changed. Do it yourself by grabbing one of the best conventional motor oils.

For example, motor oils labeled 10W-40 had viscosity measures that were widely and unacceptably at variance with the universally defined characteristics of 10W-40 motor oil. The products therefore ...

While the front label of the 10W-30 and 10W-40 motor oil containers states that the product "Lubricates and protects your engine," the back label carries the "small print" statement, "not suitable ...

There are several instances in which high-mileage oil may be the right choice for your vehicle. As such, there will be brands to target, and brands to avoid.

Kentucky and Ohio are among those states. The lawsuit alleges Dollar General sold DG 10w-40 motor oil “not suitable for use in most gasoline powered engines built after 1988.” ...

Going from a 10w40 engine oil to a 5w30 could result in around one to per cent improvement in efficiency, according to industry specialists at Castrol.

The recommended engine oil grade for Yamaha MT-15 is 10W-40 API service SG type or higher, JASO standard MA and has an engine oil capacity of 0.85 liter.