Dodge Ram 6.4 Heavy duty V-8 gas

[clarkster]

Says premium gas is recommended?..

What is the downside if regular gas is used?
Some folks are telling me nothing other than a slight decrease in power?..

Ram dealers in my neck of the woods are selling 2500 Ram quad cab 4x4 for $38K.....

I sure could use a boost in ponies towing 5500# travel trailer with a 5.0 Ford half ton.

[The_real_wild1]

You can use either one. When I had my 6.4 I ran regular for the first year. After talking to a bunch of people running premium I started to also. I found the truck ran a lot better, had better mileage and found it had more power. But I wasn't going from 87 to 89. I was running 91 or 94 octane.

[clarkster]

Brulaz...

Interestings.......I had always thought each particular refiner concocted their own particular version of "top tier"..

This would seem a 3rd party is formulating the chemicals

[brulaz]

This might help: http://www.toptiergas.com/

clarkster wrote:

brulaz wrote:
I preferred to run premium in my Ecoboost, not so much for the higher octane (I never really noticed the diff) but for the other additives that supposedly keep the engine cleaner, reducing carbon build-up. "Top-Tier" gas was also high on my list.

Whether that's an issue with the RAM, I dunno.

Do you think that "top tier" gasoline is just a marketing phrase or actually a better grade of fuel?.

Chevron advertises "Techron"....and there is a chemical sold that is supposedly "Techron", only in a can.

Arco sells "top tier" fuel.....says so right on the pump!!
Must be true?

[clarkster]

brulaz wrote:
I preferred to run premium in my Ecoboost, not so much for the higher octane (I never really noticed the diff) but for the other additives that supposedly keep the engine cleaner, reducing carbon build-up. "Top-Tier" gas was also high on my list.

Whether that's an issue with the RAM, I dunno.

Do you think that "top tier" gasoline is just a marketing phrase or actually a better grade of fuel?.

Chevron advertises "Techron"....and there is a chemical sold that is supposedly "Techron", only in a can.

Arco sells "top tier" fuel.....says so right on the pump!!
Must be true?

[parker_rowe]

The ethanol added fuels actually do have slightly higher knock resistance vs non-ethanol of the same octane.

But it does reduce gas mileage.

The are pros and cons to e10, like most things.

[brulaz]

I preferred to run premium in my Ecoboost, not so much for the higher octane (I never really noticed the diff) but for the other additives that supposedly keep the engine cleaner, reducing carbon build-up. "Top-Tier" gas was also high on my list.

Whether that's an issue with the RAM, I dunno.

[mowin]

I've run nothing but 87 in both my '14 and now my '17 6.4. No ticking or knocking even when towing my 5er.

Most premium gas in our area has ethanol. In the past yr or so there's one chain of convenience store that now has ethanol free premium. And for a premium price too. Around .40c a gal more.

[ScottG]

spoon059 wrote:

Seamutt wrote:
Premium gas does not have booze in it. The booze reduces power and mileage. I run a 8.1 L and the difference between booze and no booze is noticeable.

There is no reason to run booze in fuel at all except for income generation.

Not true, some places add ethanol no matter the grade...

All premium around here has ethonol.

[spoon059]

Seamutt wrote:
Premium gas does not have booze in it. The booze reduces power and mileage. I run a 8.1 L and the difference between booze and no booze is noticeable.

There is no reason to run booze in fuel at all except for income generation.

Not true, some places add ethanol no matter the grade...

[clarkster]

Consensus is.......go for 87......89 when under load.

Sums it up nicely......thank you

[Seamutt]

Premium gas does not have booze in it. The booze reduces power and mileage. I run a 8.1 L and the difference between booze and no booze is noticeable.

There is no reason to run booze in fuel at all except for income generation.

[GordonThree]

clarkster wrote:
Says premium gas is recommended?..

What is the downside if regular gas is used?
Some folks are telling me nothing other than a slight decrease in power?..

Ram dealers in my neck of the woods are selling 2500 Ram quad cab 4x4 for $38K.....

I sure could use a boost in ponies towing 5500# travel trailer with a 5.0 Ford half ton.

My 2017 with the 6.4 says 89 recommended but not required. Runs and tows fine with 87 for me.

My Subaru with the H6 on the other hand says minimum 91 octane and runs very poorly on anything less.

[ScottG]

It's possible the issue with using low octane fuel when towing is the slow build up of carbon.
So saving a few dollars here and there may cause you big headaches in the future.

I have the higher HP version of that eng in my SRT. I'm not worried about a few bucks every fill-up so it always gets the good stuff.

[Turtle_n_Peeps]

I suggest if you are around sea level and in hot weather towing that you buy premium. Ex: if you pull Davis dam I suggest you get premium.

Anything above 3K or so and in cooler weather I would not worry about it.

The down side is you're going to lose a handful of HP and the engine "could" run a "little" hotter.