[rustynutz]

Even though Edmunds has definitively debunked the myth of the 3,000-mile oil change, we keep hearing wildly contradictory information about engine oil,
what type to use and how often to change it. So we issued a call for oil myths, legends and lies, and gathered up a list of the top puzzlers. We then put
these questions to the experts and came up with some interesting answers. Here's a list of seven oil myths and realities to guide you through this murky
subject.

http://www.edmunds.com/car-care/top-7-urban-legends-about-motor-oil.html

[StarSeeker]

Thanks for this, interesting read.  I agree with most of that article, except running my petrol engine on black oil. .

[Dazzler]

Thanks Russell . I found that very interesting