MY DEALER TOLD ME TO RUN 89 MID GRADE FUEL IN MY DAYTONA. WHAT DO YOU GUYS THINK AND WHAT ARE YOU RUNNING IN YOURS? THOUGHT I WOULD ASK THANKS. LET ME KNOW.

 

I run 89 octane.

I Knock and Ping on anything higher. With 89 Octane I suffer no preformance decrease and the gas is CHEAPER.

 

I'm running 91 - programmed for that. But previously, I occasionally ran 87 with no problem.

dave

 

My dealer said to run 87 in my R/T. I have just the base R/T not the Daytona[X(]. But child support kept that from happening.
Scott

 

You get a knock and ping with higher octane gas I have never heard that before. I always run 93 but I don't know what this knock or ping sounds like.

 

Sounds like marbles being shaken in a jar really fast. It usually happens after the MDS kicks in areound 30-40 mile per hour and its a hot day. 90-100 degree outside( I live in TX)

I can feel the power difference in the Exxon 93 but it knocks and pings. Right now running 89 exxon and I barely hear it if at all.

I think HAL just needs to work it out, my dealer is a smuck!

 

Next time bag it or clean house. ha! Just kidding!

 

It couldn't have been said better, that's the sound!

Hey, their my marbles! I knew they fell out somewhere... been looking for em

Hum happens when MDS kicks in, that’s weird, normally you get it when under acceleration or load.

 

I run 87 in my Daytona and there's no knock or ping.

91 octane is 20 to 25 cents higher here anyway. 93 isn't avaialble.

-G-

 

That sounds weird to me, too. I agree - under a load is when you usually hear it - when the timing is advancing. Could it be that some of our machines have their total timing coming in too quickly?

dave