89 Octane recommended......you using it?

[Z mann R2]

Owners manual recommends 89.....personally I’ve used 89 for 11 years now dating back to my previous truck, an 09 Ram Hemi. Just curious how many in here are doing so as well.

 

[Le_Slacker]

There’s already a very active and recent thread on that subject

 

[Z mann R2]

There’s already a very active and recent thread on that subject

Without a poll attached

 

[Le_Slacker]

Without a poll attached

My bad. I don’t see a poll through Tapatalk

 

[zlman]

I do, Maybe I'm throwing $$ away but I want it to last and be as efficient as designed. A few extra cents at the pump lets me rest easy.

 

[Ellisstrong]

I’m tuned for premium so that’s what I use

 

[Timeless]

Since Costco/Sams do not have 89, I try to vary fill ups between 93 and 87 to mix it the best I can towards 89.

 

[brian42]

Costco 91 is Top Tier fuel and cheaper than everyone else's 89 around me (that's a Top Tier station). When I can I fill up with Costco 91 (but I'm not waiting 20 minutes to do it) otherwise I'll fill up with 89 at a Top Tier station nearby.

 

[familyman]

87.... except when towing, then 91/93 (usually costco 93)

 

[bigoldthor]

Costco 91 is Top Tier fuel and cheaper than everyone else's 89 around me (that's a Top Tier station). When I can I fill up with Costco 91 (but I'm not waiting 20 minutes to do it) otherwise I'll fill up with 89 at a Top Tier station nearby.

Pretty much exactly what I do. Except our Top Tier 89 is *slightly* less than Costco 91. Just depends on where I'm at and what's most convenient. But I only use Top Tier brands regardless of 89 or 91 (Costco).

 

[Timeless]

Costco 91 is Top Tier fuel and cheaper than everyone else's 89 around me (that's a Top Tier station). When I can I fill up with Costco 91 (but I'm not waiting 20 minutes to do it) otherwise I'll fill up with 89 at a Top Tier station nearby.

Pretty much exactly what I do. Except our Top Tier 89 is *slightly* less than Costco 91. Just depends on where I'm at and what's most convenient. But I only use Top Tier brands regardless of 89 or 91 (Costco).

Same here other than we have 93 instead of 91...and Costco 93 is usually close to other brands 89.

 

[COWBOY CADILLAC]

I use 87 octane with 10% ethanol, runs just fine, no knock.

 

[jdmartin]

I had been using only 89. Then I was on a road trip and was running low on gas. Got off the highway and all they had left was 87, so I used it. Didn't notice any difference whatsoever on that tank. Since then I usually alternate or don't care at all. The cost doesn't matter to me either way; it's insignificant compared to the truck, but sometimes I stop for gas and my only choice is 87 or 93, and there I use 87.

 

[Z mann R2]

I’m tuned for premium so that’s what I use

What tuner you using?

 

[Ellisstrong]

What tuner you using?

I’m still on my canned Procharger tune currently. It’s the one that comes with the Procharger installation.

 

[Firebird]

I run 89 or 93 octane only

 

[Fatherof3]

91 octane for me but that’s because there’s more cleaner agent in the 91 in my area than the 89 or 87

 

[Nails]

Every driver, engine and climate are different. Try them all see what best fits all 3.

 

[slimchance]

we run 88 octane in our trks . ... before you all fall apart, it is E15