On 7 Jun 2005 06:00:30 -0700, "Professor" <briangriffey@sbcglobal.net>
wrote:

>I think you might only notice a difference in very cold weather. The
>5W20 might allow the engine to crank faster...
>


Why would that be since they are both 5W oils??

There has been a ton of debate on the 5W20 v 5W30 at
http://www.bobistheoilguy.com