Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Toyota Prius 10% gain from switching to high mileage oil

alex16 · 07-01-2016, 09:19 PM

I found a fellow uber driver that claims he gained 10% fuel economy from switching to high mileage synthetic oil from Firestone. I think he said he went from 42mpg to 48mpg. I told him it's more likely his driving that changed the mpg rather than the oil. He stands behind the oil changed the car, I told him I would post on here with mpg experts, I tried to explain there's way too many variables on daily driving to measure gains accurately, not sure if anyone has gained much mpg from a oil upgrade? 10%?

07-01-2016, 09:19 PM	#1 (permalink)
alex16 Mirage 5MT driver Join Date: Jul 2013 Location: Pennsylvania Posts: 43 honda - '99 Honda Civic EX 90 day: 38.09 mpg (US) Mirage - '14 Mitsubishi Mirage ES 90 day: 45.5 mpg (US) Thanks: 0 Thanked 5 Times in 5 Posts	Toyota Prius 10% gain from switching to high mileage oil I found a fellow uber driver that claims he gained 10% fuel economy from switching to high mileage synthetic oil from Firestone. I think he said he went from 42mpg to 48mpg. I told him it's more likely his driving that changed the mpg rather than the oil. He stands behind the oil changed the car, I told him I would post on here with mpg experts, I tried to explain there's way too many variables on daily driving to measure gains accurately, not sure if anyone has gained much mpg from a oil upgrade? 10%? __________________ 1999 Civic EX coupe Autotragic -MPG project best mpg 54.2 w/masking tape mods otherwise stock. -SOLD 2014 Mitsubishi Mirage ES 5MT. 15k miles 44.2 mpg avg overall in my mountain, northern PA 2010 Cobalt sedan XFE -project uber/mpg taxi.