Date registered: Oct 2015
Vehicle: 2006 E320 CDI
Location: Barrington, RI
Mentioned: 1 Post(s)
Quoted: 66 Post(s)
A few weeks ago I set my cruise to 60mph and went 20 miles down I-5 and got 43.5 mpg (said the computer) in my 07 E320 bluetec. However, I usually get 32-35 mpg mixed driving (tank calculation) and going a more reasonable speed like 75mph. Yes its a OM642 and its fairly modified (no dpf, no egr, no swirl flaps). It has been fully serviced recently which probably helps at 103k on the clock. My friend has a fully stock 08 E320 bluetec with 120k miles and he gets mid to high 20s mpg no matter how hard he tries. I am curious shertex, how much Optilube do you add per tankful? I assume that's to keep the injection pump lubricated?
1 oz. of summer blend per 10 gallons. Mainly to lube injectors. Pump may be lubed by oil...not sure.
06 E320 CDI "Benson", Platinum Blue, 175k mi
06 E320 CDI "Rutherford", Black, 145k mi
91 300D "Otis", Smoke Silver, 129k mi
98 E300 "Murray", Silver, 129k mi, Stage 2 Rocketchip chip tuned, under son's care
Eleven other MB's owned and sold
2002 Honda Odyssey 255k mi (want to name it "Homer," wife won't let me)
1961 Very Tolerant Wife