> Curt wrote: > I still don't think you understand how the 5w part of the rating > works. It's a 40w oil that resists thickening when it's cold.
Other way around. It's a 5w oil that doesn't thin as much as it gets hot. Until the VI breaks down and it becomes a 5W oil. Admittedly not prone to happening without longer drain intervals. > The Delvac 1 everybody used to crow about was 5w40... Some of the group IV synthetic oils don't even need viscosity improving to achieve a multi-weight rating - they are by nature less prone to thinning as it heats. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
