Let’s talk gas

[Sportshot2]

So the recommendation from Ford is to use 91 octane fuel. Most 91 is listed as recreational fuel only but I still believe that all normal non-racing gas does not contain lead. Isn’t 91 octane fuel just manufactured with non-lead lubricants? When I was 60 years younger I believe lead was used as a lubricant in gasoline.

I still think some racing fuels contain lead but I’m not sure, please enlighten me on what not to use in the Raptor Ranger!

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[AlpineBike]

Today, it’s pretty difficult to buy leaded fuel unless you’re buying at an airport.
Most “racing fuel” has a higher oxygen content and or octane rating than normal pump gas. I would not ever recommend anyone use leaded fuel with any engine that has a catalytic converter. Back in the day, lead was used as a lubricant for the valves. This hasn’t been needed in 60+ years.

Without a total recalibration of the ecu, or big increase in boost and/or compression ratio, there’s no reason at all to use anything higher than a 93 octane fuel.
The truck will still run ok on 91 octane or below, but the second the ECU detects “knock” it’s going to start pulling timing (therefore reducing power). It may take a full tank of 93 and seeing no “knock” before the ECU brings the truck back to full power.

 

[T-Rev]

The only gas that would have lead now days are some racing gases and aviation gas. Do not use anything with lead as it poisons the catalytic converter.

Most recreational 91 I've seen doesn't have ethanol. Ethanol can cause issues with fuel systems not intended for it.

 

[RaptorBlue]

I say, now some might thinks it's a little controversial, but I think you should send that raptor to Livernois. Get her a nice e50 tune where you are gonna run 50 percent corn flavored go juice and they rest will be 93 octane Dino juice. It comes out between 98 and 100 octane. 50 degree colder charge air Temps will allow higher boost pressures without detonation. Tune that baby up to about 520hp. Oh sorry, those are my plans. Rec fuel just doesn't have ethanol in it. What you should run is the highest octane available at the gas station that you go to. Avoid filling your truck at airports and marinas and you should be fine.

 

[Critical Habitat]

The only gas that would have lead now days are some racing gases and aviation gas. Do not use anything with lead as it poisons the catalytic converter.

Most recreational 91 I've seen doesn't have ethanol. Ethanol can cause issues with fuel systems not intended for it.

Correct. Local gas station have 91 octane without ethanol used primarily for smaller engines like lawnmowers and tillers and some off-road vehicles. The sign indicates not for regular vehicles.
They also have 91 and 93 (mid-grade and premium) that does contain ethanol and the recommended detergent additives.

 

[NASSTY]

Correct. Local gas station have 91 octane without ethanol used primarily for smaller engines like lawnmowers and tillers and some off-road vehicles. The sign indicates not for regular vehicles.
They also have 91 and 93 (mid-grade and premium) that does contain ethanol and the recommended detergent additives.

Around here the 91 ethanol free costs $.40 more per gallon than 93 w/10% ethanol so I run 93 w/10% ethanol.

 

[Sportshot2]

So are you saying don’t use the recreational gas because it doesn’t have the correct additive?

Correct. Local gas station have 91 octane without ethanol used primarily for smaller engines like lawnmowers and tillers and some off-road vehicles. The sign indicates not for regular vehicles.
They also have 91 and 93 (mid-grade and premium) that does contain ethanol and the recommended detergent additives.

 

[olefordguy]

IMO, stick with any of the Tier 1 fuel brands 91 octane or above and there should be zero worries.

 

[Critical Habitat]

So are you saying don’t use the recreational gas because it doesn’t have the correct additive?

No, I use it for small engines and such, but it is technically illegal here for use in passenger vehicles.
Detergent additives in non-recreation gas are good for your fuel and injector system.
(d) The pump stands must be posted with a permanent notice stating: "NONOXYGENATED GASOLINE. FOR USE IN COLLECTOR VEHICLES OR VEHICLES ELIGIBLE TO BE LICENSED AS COLLECTOR VEHICLES, OFF-ROAD VEHICLES, MOTORCYCLES, BOATS, SNOWMOBILES, OR SMALL ENGINES ONLY."

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