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 ...

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

Valvoline Inc. (NYSE:VVV – Get Free Report ... that have updated their coverage on the stock in the last year is $44.40. VVV has been the subject of a number of research reports.

Two things I would try: There is a new oil (I have not tried it yet) from Valvoline called Restore ... Perhaps try a 10W-30 oil. If this doesn’t work, then try an oil additive such as Lucas ...