I use 87 because the gas is so damn expensive these days. I got a ticket for free gas from my dealer. So I filled it up with 94. Can I go back to 87 and maybe one day put in 89? Or should you stick with one kind. Please someone who knows this for sure, thanks!

 

asdf. https://maxima.org/maxfaqs/sub_gener...html#General_4

 

You can switch around, but shouldn't. Just use 91. You will lose some gas mileage with 87 (not as much as money saved, but why stress the knock-sensing, and decrease your power?).

 

Up until a few months ago I have run 93 since i bought the car. With the increase in gas prices though I've been running 91 for about a month. No changes in mileage or power, no pinging. Regardless of how high the price gets I won't go lower. It's just the price of having the best car, the best fun!

I also agree, don't swap back and forth. Pick a grade and stick with it until 93 is more affordable...

Pray for price drops...

 

good call