On Mon, 19 Sep 2016 10:56:13 -0400 Dan--- via Mercedes <mercedes@okiebenz.com> wrote:
> I understand, since it's a synthetic I'm sure it flows far better in > cold temps than a conventional oil. > > In the higher mileage M119s I've had I run 15W-50 M1 and change every > 7500, maybe 10k in the older son's car, since his mileage is almost all > highway. The only reason for using the higher viscosity oil is to keep > idle pressures up in high temperatures. In both M119s with over 275k > the idle pressure drops perilously close to 1.0 bar during the hottest > times of the year with everything turned on. If I use the 15W-50 idle > pressures are more like 1.5 bar under similar conditions. The low-pressure spec on OM61x is 0.5 bar; I don't know what it is on M119. Craig _______________________________________ 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
