I too get better mileage on the Dino (have not checked but for me it seems like it is a few mpg), but I like the muted purr of the B20 and it's cleansing abilities. Have been running mostly B20 for a couple of years now (15,000 miles +-) and just did the filters this past weekend, two small black specks in the pre-filter only.

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raMBow

1999 E300DT Obsydian Black Metallic, Heated Full Leather Parchment options, E2, K2, 136,000+, best 36.5 mpg - GP's 12-04 & 11-12 Zero Stuck
2010 Honda Odyssey - The BrideMobile - best 26.5
(2) 2005 Honday Accord- (1 -Corporate 1 - Personal) - 110,000 4-cyl 30mpg
2000 VW Golf GLS TDI, Upsolute Chip (sold to Brother, now 300+k on it) 48.5 mpg like clock work
1987 Honda CRX HF - Sold 87,000 always over 50 mpg Max 67 mpg