"The Motor Oil Evaluator" is a brand new, completely free offering, which will allow you to quickly and easily compare hundreds of oils to find those that will perform best in YOUR application. Gas engine oils, diesel engine oils, motorcycle oils, 4-stroke small engine oils, 5w20, 20w70 and every viscosity in between. Further below on this page, you'll see the complete feature set for this new offering, but, I happen to believe in the expression that "a picture is worth a thousand words".
http://www.themotoroilevaluator.com/