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Old 05-09-2008, 10:18 PM   #8 (permalink)
rickbaier
BenzWorld Newbie
 
Date registered: May 2008
Vehicle: 1994 E-320 Wagon
Location: Paso Roblles
Posts: 4
Red face Premium VS Regular ?..............solved

After reading the manual and your responses it makes sense to continue using premium (unleaded of course). The engine appears to be designed to run on higher octane fuel as indicated by the 10:1 compression. Also I understand pre ignition (“Pinging”) is often not audible and running regular can cause some serious long term problems without us even knowing about it. So I will stick with running premium and probably get better power and continue to sustain my 25MPG (actually saving money).
Thanks for all your advice
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