Bimmerfest - BMW Forums - View Single Post - Fuel Mileage - puzzling discrepancy . . . indicated vs. actual/manual
View Single Post
  #37  
Old 09-05-2019, 11:19 AM
Autoputzer Autoputzer is offline
Officially Welcomed to the 'Fest
Location: NW Floriduh
 
Join Date: Mar 2014
Posts: 8,654
Mein Auto: 2014 535i + 2018 X3 30i
Quote:
Originally Posted by Gary214 View Post




I really enjoyed your post.

Frau Putzer must be one cool lady

Why blend 1/3 and 2/3 ??

I would assume that 50- 50 of 87 and 93 gas would make it 91 gas
1. Thanks.

2. She has her moments.

3. Octane is roughly a weighted average:

https://www.sunocoracefuels.com/tech...ulating-octane

A 50%/50% blend of 87 AKI and 93 AKI would get you 90 AKI.

A 50%/50% blend of 89 AKI and 93 AKI would get you 91 AKI.

A 33%/67% blend of 87 AKI and 93 AKI would get you 91 AKI, and generally be a little cheaper than the 50%/50% blend of 89 AKI and 93 AKI.

Gas pumps make 89 AKI from a 67%/33% blend of 87 AKI and 93 AKI, or a 50%/50% blend of 87 AKI and 91 AKI. But, they generally charge disproportionally more for 89 AKI.

Last edited by Autoputzer; 09-05-2019 at 11:53 AM.
Reply With Quote