I don't think the "eco" concern with topping off is weight related. I think its with overflow (spillage) and that's definitely something I've noticed with the Raptor. For whatever reason, when the pump clicks off, it really means full. When I try and top off beyond that, a few seconds later I'll notice gas spilling out under the cap and onto the pavement. Money out the door (oh yeah, and of course I'm ruining the planet too
![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
icard
PS: I paid $3.50 for E85 yesterday. The same station had regular unleaded for $4.40. Although that's WAY too much for E85, relatively speaking I was happy to pay it.