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Old 07-06-2016, 01:50 AM   #1
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V10 Ace. What kind of gas do you put in it?

We have a 2016 Ace 29.3 and I have always put the lowest (cheapest) gas in it. Twice, we experienced "surging" but in both cases it went away ....after 50-100 miles. Ford put it on their computer and could not find any problems... do you think the grade of gas has any affect on it? Thanks for your input.
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Old 07-06-2016, 02:00 AM   #2
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Nope; you always want to put "low-grade" or "Economy" fuel in for the V-10.

The only time you put mid-grade or premium is if you get a 5-Star tune for those fuels.
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Old 07-06-2016, 02:09 AM   #3
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I had surging in my 2010 V-10 several times and it was due to water in the fuel. Both times it happened right after a refueling and once I watched the fuel truck pull into the station as I left indicating I had purchased fuel from a near empty tank. Both times I quickly added a can of Seafoam to the tank which solved the problem. If you had water in your tank, some may still be there. A $10 can of Seafoam is cheap insurance.
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Old 07-06-2016, 04:43 AM   #4
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X2 on the Seafoam, also an occasional tank of premium/super will help clean the fuel system.
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Old 07-06-2016, 01:07 PM   #5
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Seafoam will also help clean your engine just as importantly clean your generator. Surging in the generator is often a dirty engine and Seafoam will help clean it out and keep it running.
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Old 07-06-2016, 09:01 PM   #6
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Old 07-06-2016, 09:20 PM   #7
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Times 3 on the Sea Foam. But at least on my 2015 34E MH it shows
on the sticker near the driver to use 87 or better octane gas.

I normally use 85 octane gas and then add a couple of cans of Sea
Foam to my tank. One can is usually good for 25 gallons and I have
a tank that holds about 80 gallons of fuel.
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Old 07-06-2016, 09:42 PM   #8
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Where do you buy sea foam
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Old 07-06-2016, 10:39 PM   #9
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Originally Posted by Phil Saran View Post
Times 3 on the Sea Foam. But at least on my 2015 34E MH it shows
on the sticker near the driver to use 87 or better octane gas.

I normally use 85 octane gas and then add a couple of cans of Sea
Foam to my tank. One can is usually good for 25 gallons and I have
a tank that holds about 80 gallons of fuel.
Which costs more? Fill with 87 octane or two cans of SeaFoam and 85 octane gasoline?

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Old 07-06-2016, 10:58 PM   #10
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Originally Posted by Bob Montgomery View Post
We have a 2016 Ace 29.3 and I have always put the lowest (cheapest) gas in it. Twice, we experienced "surging" but in both cases it went away ....after 50-100 miles. Ford put it on their computer and could not find any problems... do you think the grade of gas has any affect on it? Thanks for your input.
Ron adds LUCAS to a fillup .. we use regular, but not anything with Ethanol.
(He sez sometimes you get it anyway)
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Old 07-06-2016, 11:34 PM   #11
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Originally Posted by Bob Montgomery View Post
....cut.... Ford put it on their computer and could not find any problems... do you think the grade of gas has any affect on it? Thanks for your input.
My 2 cents....

Fuel quality can certainly affect how an engine runs, but running octane rating higher than necessary won't help in my opinion.

My V10 (2-valve model) just turned 150,000 "easy" miles last night driving from Texas to Florida, and I have never had any surging or other problems. While I only run 87 Octane, I buy it mostly from Exxon or other major brand (Shell, Texaco, Chevron, etc.). I avoid all generic fuel stations.

I trust (perhaps I shouldn't ????) that major brands have higher quality control and use better fuel additives. There is a lot of controversy on this subject, so I play it safe even though it cost a bit more. On the other hand, I won't pay for higher Octane.

Your Ace has the 3-valve V10 but that in itself shouldn't make a difference.
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Old 07-06-2016, 11:44 PM   #12
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We have storage tanks here all the stations get it from the same place. The problem is that different octans are in same storage tank separated by water.
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Old 07-07-2016, 12:39 AM   #13
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We have storage tanks here all the stations get it from the same place. The problem is that different octans are in same storage tank separated by water.
We have noted that all the stations in Cody WY seem to get there gas from the same (or maybe one other) distributor. But could you explain what you mean by the same storage tank separated by water? Thanks.
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Old 07-07-2016, 01:38 AM   #14
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Where do you buy sea foam
Seafoam is sold at my NAPA store and many other auto supply stores.
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Old 07-07-2016, 01:45 AM   #15
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85 octane is only sold out west, as far as I know. Regular gas east of the Mississippi and many states west, is 87 or above octane gas. The first time I took my RV out west, I put in 85 octane before I realized that it existed and I got engine knock and reduced power. The engine specs call for 87. I would not use 85, especially in mountainous areas.
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Old 07-07-2016, 04:17 AM   #16
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I worked for an oil company for 30+ years & ABSOLUTELY NO fuel products are seperated by water, that is highly regulated.
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Old 07-07-2016, 04:32 AM   #17
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We have storage tanks here all the stations get it from the same place. The problem is that different octans are in same storage tank separated by water.
Please be sure to post where the product stored in these tanks is going so that everyone can avoid buying any of their products. l worked for an oil company for 30+ years & there are ABSOLUTELY NO products seperated by water, product quality is constantly checked & highly regulated.
Most all fuels in any given area come from whichever refinery or two is closest to that area, you could be buying Shell fuel at a Chevron or vice versa, & they all purchase from whichever is cheapest today.
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Old 07-07-2016, 11:29 AM   #18
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87 not 85

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Originally Posted by Oneilkeys View Post
85 octane is only sold out west, as far as I know. Regular gas east of the Mississippi and many states west, is 87 or above octane gas. The first time I took my RV out west, I put in 85 octane before I realized that it existed and I got engine knock and reduced power. The engine specs call for 87. I would not use 85, especially in mountainous areas.

Amen !!
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Old 07-07-2016, 04:16 PM   #19
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SORRY! Looks like I posted twice, the phone rang & I thought I'd lost the 1st one, CRS disease.
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Old 07-07-2016, 06:17 PM   #20
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....cut....
Most all fuels in any given area come from whichever refinery or two is closest to that area, you could be buying Shell fuel at a Chevron or vice versa, & they all purchase from whichever is cheapest today.
Aren't additives added after initial fuel sourcing?
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