Date registered: Dec 2005
Vehicle: E320/E250 Bluetec Ford F350 6.7l
Location: V E G A S
Mentioned: 30 Post(s)
Quoted: 2003 Post(s)
All MB I know about have self-purging cooling system. Only issue is solid thermostat.
The chem pack is part of 15 years coolant life, where the same coolant in older car with no pack have 2 years intervals.
I read here that some aftermarket reservoirs come with no pack, so it is worth buying MB part.
If you have pressure gauge on your garage shelf, it is easy to build your own test kit, using the small bleeding hose.
Small Tee you can buy with universal vacuum kit, some hose and connector.
I build something like that for my 6l Powerstroke and drove with it permanently since the engine had weak head bolts.
Last edited by Kajtek1; 04-29-2019 at 08:00 AM.