Gasoline

[me1]

2019 crew cab 1500 4x4 5.7 hemi
Does anyone actually run the manufacturer Reccomended mid grade gasoline which around my area is 89 octane or do most just go with 87 octane.
Will it void my warranty if I don’t use mid grade

 

[LaxDfns15]

Been discussed many times. A simple search will guide you. The truck can run on 87, as stated by the manual, so your warranty won't be voided.

 

[Nsleone]

2019 crew cab 1500 4x4 5.7 hemi
Does anyone actually run the manufacturer Reccomended mid grade gasoline which around my area is 89 octane or do most just go with 87 octane.
Will it void my warranty if I don’t use mid grade

Using 87 won’t void your warranty, the general consensus on here is most people run 87 and it is just fine for 90% of the driving but it is recommended to use 89 if you’re towing. The manual does say if you run 87 it might pull timing to prevent knocking ( this happened to me so I switched to 89 ) and thus you will lose some power / efficiency but should have no major problems at all on 87

 

[bigdodge]

2019 crew cab 1500 4x4 5.7 hemi
Does anyone actually run the manufacturer Reccomended mid grade gasoline which around my area is 89 octane or do most just go with 87 octane.
Will it void my warranty if I don’t use mid grade

it will not void the warranty

 

[ferraiolo1]

Only if you enjoy hearing engine pinging under load.


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[Reverse]

2019 crew cab 1500 4x4 5.7 hemi
Does anyone actually run the manufacturer Reccomended mid grade gasoline which around my area is 89 octane or do most just go with 87 octane.
Will it void my warranty if I don’t use mid grade

Manual states you can run 87, so that should answer your question. Don't really understand how the opinion of a bunch of yoyo's on the intertubes ;-) could have more authority than the manufacturers manual.

Anyway, I run 87 all the time on both our trucks. One has lasted 185000 miles so far, the other 68,000 IIRC. Like the previous poster said, there will be knock-like noise when under heavy load sometimes, but according to the manual that's fine ....

 

[HSKR R/T]

Manual states you can run 87, so that should answer your question. Don't really understand how the opinion of a bunch of yoyo's on the intertubes ;-) could have more authority than the manufacturers manual.

Anyway, I run 87 all the time on both our trucks. One has lasted 185000 miles so far, the other 68,000 IIRC. Like the previous poster said, there will be knock-like noise when under heavy load sometimes, but according to the manual that's fine ....

Manual states you can experience some knock, not that knock is fine. By the time detonation is bad enough to be audible, it's causing damage.

To answer OPs question. I only ran 87 on my very first tank because that's all that was available when I needed to fill up. After that, nothing but 89 until I installed my Pulsar tuner. Now I only run 91 non-ethanol

 

[mikeru82]

I ran 87 in my previous 5th gen for the 18 months I owned it, and have been running 87 in my current truck for the past couple months. I never heard any knocking on either truck. I'm not saying it doesn't happen. Just that if it is, it's not loud enough for me to have heard. I should mention that I only use top tier gasoline.

 

[Richard320]

2019 crew cab 1500 4x4 5.7 hemi
Does anyone actually run the manufacturer Reccomended mid grade gasoline which around my area is 89 octane or do most just go with 87 octane.
Will it void my warranty if I don’t use mid grade

In order: Yes. No.

10¢/gallon difference when the 87 octane is already $4.59/gallon doesn't make much difference to the wallet.

 

[mikeru82]

In order: Yes. No.

10¢/gallon difference when the 87 octane is already $4.59/gallon doesn't make much difference to the wallet.

It's funny you say that. When I bought my Limited last May, 89 octane was only 10 cents/gallon more than 87 where I live. So I used 89 for the first couple months I owned this truck. Now it's anywhere from 15 to 25 cents/gallon more, and will usually opt for the 87 with that price difference. At $3.79/gallon, gas prices here aren't as high as they apparently are where you live. Saving 7 bucks on a one time fill isn't a big deal, but it adds up over time.

 

[ferraiolo1]

Or just run e88 that’s a happy middle ground and much cheaper. And runs just as good with no real hit in mpg.

Per the manual you can run up to 15% ethanol.


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