Is it because the manual was referring to dino oil and almost all current oil is synthetic? I know that my OM616 and OM617 engines would easily start down to 0° F with Mobil one back in the day vs very hard to start below freezing with Castrol 20w50.
------- Original Message ------- On Sunday, October 15th, 2023 at 12:50 PM, Kaleb Striplin via Mercedes <mercedes@okiebenz.com> wrote: > In looking thru the manuals on this 123, the manual shows 15w40 good down to > 23 where as later and I believe current oil charts show it good down to 5 > IIRC. Why such a big difference from back in the old days? Is 15w40 today > that much better and can be used at lower temps than 15w40 from 40 years ago? _______________________________________ 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
