I researched this a bit before, and you can put the lower in (not the lowest I imagine) but mid-range, and it will usually run fine. My grandfather advised me to do it and only change if I heard a click/tick, but I don't mind putting 93 in.

 

I run premium. I always use whatever is recommended for the car I'm driving.

I'm gonna need to get my Civic back.. commuting in the Z is hurting my bank account lol

 

I as well run 93 in my ss. $52 bucks to fill 3/4's of a tank today =(... but hey its worth it. Like basic said not much savings to go to a lower grade.. IMO

 

93 octane in trans am always. ranger gets 87

 

i use chevron regualr, u shouldnt use octane, 93, that much, unless your about to go racing, think about it, that high, its almost like running nitrous all the time(analogy)

 

I can only get 91 octane, I've never seen a 93 octane pump here.

 

I run 87 octane, but every time I do an oil change, the next time I fill up I use 93 for that one tank to break down any carbon build up.

 

your telling me, I dropped about $150 after about a 4 day stint of driving. that was paying lke $3.90 a gallon and not $4.50 lol.

 

huh?

please elaborate

 

Nissan- 89
Honda- 89
Mazda- 89
3rd gen- 89
4th gen- premium
stang- premium
lawnmower- 89
chain saw- 89
weed whacker- 89
pressure washer- 89

octane is the ability to resist detonation. Octane can be up to 2 points lower than posted thus 87 could actually be 85.

when timing is retarded an engine makes less power and if retarded enough, will run hotter.