I don't think this is true. At least I know running a 61x engine with no thermostat will cause overheating.
Actually its more complicated than that. When I had my '81 300TD the previous owner had taken out the thermostat and the car would go fine for about half an hour, then overheat. Interestingly if you got it up to temp (say 5 minutes) and shut it off, then started it back up it would overheat immediately. So I'd say a forced open thermostat is still required for a 61x engine flush. -Curt Date: Sat, 1 Jun 2013 22:39:00 -0400 From: Rick Knoble <rickkno...@hotmail.com> To: Mercedes Discussion List <mercedes@okiebenz.com> Subject: Re: [MBZ] Citric Acid Flushing Message-ID: <bay402-eas332567f47de012558231d7dd...@phx.gbl> Content-Type: text/plain; charset="us-ascii" On Jun 1, 2013, at 10:28 PM, "Hendrik and fay" <heni...@gmail.com> wrote: > From memory you need a thermostat to seal the housing? OM60x yes a forced open thermostat is required, OM61x no thermostat required to flush system. Rick Sent from my iPhone _______________________________________ http://www.okiebenz.com For new and used parts go to 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
