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elhigh · 01-29-2020, 11:18 AM

Temps make a big difference. From about 55F and up, my Prius makes summertime MPGs, from 55F and down, winter MPGs - and "winter MPGs" get worse and worse, the colder it gets.

Again, if you go to the garage page and look at some of the vehicles that have been updated for several years, you'll see a pretty clear relationship between fuel economy and the time of year. Warmer is gooder.

As to fuel grade affecting fuel economy, I haven't observed that. Then again I only fill up at about three different places, and always get the cheap stuff so I don't have a lot of scope for comparison.

As to the truck, I think it would run on straight Pabst Blue Ribbon so whatever pisswater fuel I can pour into the tank, it'll deliver some kind of performance.

01-29-2020, 11:18 AM	#23 (permalink)
elhigh Master Novice Join Date: Jan 2008 Location: SE USA - East Tennessee Posts: 2,314 Josie - '87 Toyota Pickup 90 day: 29.5 mpg (US) Felicia - '09 Toyota Prius Base 90 day: 49.47 mpg (US) Thanks: 427 Thanked 616 Times in 450 Posts	Temps make a big difference. From about 55F and up, my Prius makes summertime MPGs, from 55F and down, winter MPGs - and "winter MPGs" get worse and worse, the colder it gets. Again, if you go to the garage page and look at some of the vehicles that have been updated for several years, you'll see a pretty clear relationship between fuel economy and the time of year. Warmer is gooder. As to fuel grade affecting fuel economy, I haven't observed that. Then again I only fill up at about three different places, and always get the cheap stuff so I don't have a lot of scope for comparison. As to the truck, I think it would run on straight Pabst Blue Ribbon so whatever pisswater fuel I can pour into the tank, it'll deliver some kind of performance. __________________ Lead or follow. Either is fine.