Fair.....and accurate math. But......15.2 feels so much better than 13.5....somewhere around 30% better, I'd say.The experts will tell you it's not related to the octane.
I'll tell you that even if it was, you got 10% better economy at a cost of 20% extra per gallon. Not a win.
I like playing around with this website:
Fuel Cost Calculator
I'm going to run premium for a bit to see what happens, I can get premium cheaper at Costco than I can get midgrade anywhere else in town.
These were the numbers I ran and figured I'd be out a couple of bucks in 6 months if it is a wash... I would still use a TOP TIER, vs the uber cheap stuff.
++++++++++++++++++++++++++++++++++++++++
87 Octane is $2.04 at my local Costco
15mpg would make a 500 mile trip $68.00 and 33.33 gallons
91 Octane is $2.35 at my local Costco
17mpg would make a 500 mile trip $69.12 and 29.14 gallons
*BUT*
If you can get the MPG up by one more
18mpg would make a 500 mile trip $65.28 and 27.78 gallons
*OR*
If the price difference were closer to .20 cents, $2.25 vs $2.35
17MPG would make a 500 mile trip $66.18 and 29.41 gallons
That's two votes for 2 mpgs more with higher octane......I got 2 MPG better with 89. I also feel like I am somehow giving my truck something less than ideal now with 87 mentally, like it's putting dirty gas in there! I will stick with 89. I was doing the math though on the price difference versus the fuel saving difference and it's a wash, or certainly so close as to not be worth debating.
Yep out of your walletHas anyone really noticed any difference in mpg's with the different fuel grades? I've been getting high 12's on 87 and just fueled up with some 91.
Just was wondering if it was worth it to use the higher octane fuel.
Yep out of your wallet
Besides using unleaded gasoline with the proper octane rating, gasolines that contain detergents, corrosion and stability additives are recommended. Using gasolines that have these additives will help improve fuel economy, reduce emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline contains a higher level of detergents to further aide in minimizing engine and fuel system deposits. When available, the usage of TOP TIER Detergent gasoline is recommended. Visit www.toptiergas.com for a list of TOP TIER Detergent Gasoline Retailers.
Yes, the Premium is likely overkill, but for me it is a good .20¢ *cheaper* at Costco than Midgrade anywhere else... and Costco does sell TOP TIER gas.
I know what my target #s are for this experiment... I'm willing to spend and extra .20¢ a gallon through a couple of tanks to see if there is a difference.
I was thinking this over as I do the Costco thing as well. I do believe next tank I'm going to split the tank between the two grades to get 89!
Yes, the Premium is likely overkill, but for me it is a good .20¢ *cheaper* at Costco than Midgrade anywhere else... and Costco does sell TOP TIER gas.
I know what my target #s are for this experiment... I'm willing to spend and extra .20¢ a gallon through a couple of tanks to see if there is a difference.
Well, that's what they do at the gas stations... looking at the math, that about $5 'saved' if you do 50/50... provided you know exactly how much gas to put in...
Top tier is also key when filling up. I did not know Costco supplied top tier.
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