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Old 07-01-2016, 08:19 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%?

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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.
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