Will Using 87 Octane impact performance?

[BLUEKNIGHT911]

Now y'all have me wondering if I could switch down from 93 in my Lexus RX-450hl. Fill ups in that thing can get quite expensive, and gets about the same mpg as my Spyder, lol.

I know what is recommended in my 14 RT; and what BRP advises us to use ....... the same should be done in ANY car make and model - some systems can handle 87 reg. w/ethyl... our Spyders can... good luck! ... Mike :thumbup:

 

[BajaRon]

Let's see: my 2021 F-150 2.7L Ecoboost can get over 24 MPG on 87 octane regular (think up to 10% alcohol) and that is 99% all that has been in it for 33,000 miles; my Kawasaki KRX 1000 SxS has run fine for over 4,000 miles on 87; and both of my 2018 Spyder RT's run fine on 87.

My F250 is diesel. It's supposed to run with a minimum of 40 Cetane. Maybe I can get away with 35!

Straight from the horses mouth. How could anybody argue with that.

I think that question has answered itself! Which leads us right back to the theme of... :bdh:

 

[troop]

In my area, 91 100% gas is around .70/gallon more than 87 10% ethanol. 89 10% ethanol usually splits the difference. Locally, I tend to flip/flop between 87/91. When traveling long distances, I tend to run 87 octane during the there/back drive and 91 when at destination. No reason. Just because