Which octane do you guys run in your HEMI's?
Champion
Joined: Jun 2009
Posts: 3,210
Likes: 0
From: Collinsville, Oklahoma
When the pistons need replaced from detonation holes burned in them, the .10 a gallon difference isn't so much cheaper. That's only $2.60 a tank if you run it dry for 26 gallons. This is why it is recommended in the owners manual
93 will not hurt anything with the stock tune, it just isn't needed. The timing/fuel trim of the stock tune is designed for 89 octane fuel.
93 will not hurt anything with the stock tune, it just isn't needed. The timing/fuel trim of the stock tune is designed for 89 octane fuel.
All Star
Joined: Jan 2009
Posts: 757
Likes: 0
From: Dallas, Texas
I think he was.
Guys running 87 only for a long period of time have known to encounter piston problems. I'm sure you know this, but I'm reiterating for the guys that posted saying that's all they put in...
Yeah you aren't having problems yet, but it is something that happens over time.
Guys running 87 only for a long period of time have known to encounter piston problems. I'm sure you know this, but I'm reiterating for the guys that posted saying that's all they put in...
Yeah you aren't having problems yet, but it is something that happens over time.
Record Breaker
Joined: Jul 2007
Posts: 1,562
Likes: 1
From:
I look at it like this. Around here, 87 is $.20 less than 91. SO $.20x 26g is around $5.20 more a tank and since when do you fill up a full tank. I usually fill up 20gallons at a time so for $4 more i would much rather pay the best i can.
Record Breaker
Joined: Apr 2008
Posts: 1,524
Likes: 0
From: REDNECK, USA
Yes he is and I will agree with him 100%. We have had post on here, a long while back about this exact problem. Some get away with running 87 but most don't. Some get away with running Platinum plugs in the Hemi but most don't. To me it just makes sense to spend the extra couple bucks per tank not to have to worry about having the piston problem. I mean the factory recommends copper plugs and 89 octane for the Hemi so why chance it. BTW I run 93 with a tune but before the tune I ran 89.
