I have a 2015 sequoia with the 5.7 . Anyone ever use flex fuel in those engines ? Just curious, I spent 300 dollars this month hauling firewood home. 30 mile round trip. Flex fuel is 15 cents cheaper. I don’t want to damage that engine tho. Pros and cons please.

I wouldn't........read your owners manual.

Bought it used a year ago, but no owners manual. Plaque on the back of the rig says flex fuel ok but I’m skeptical.

How often do you haul? 300 bucks for the one month is cheaper than a new engine.

I get 88 octane every now and then , it's 85% gasoline and 15% ethanol .
Flex is 85% ethanol and 15% gasoline.
From what I've read Flex fuel is for hybrids that are both electric and fuel based.
88 octane is said to clean your carburetor and may get 1-2 miles less per gallon.
Sometimes 88 is 50-75 cents cheaper at Sheets .

I have a 2016 tundra that is a flex. If it has the flex sticker on it you should be able to run it. You need to save more than 15 cents a gallon to make it pay though because you will lose significant mileage. Even worse when pulling something.

I've never seen flex fuel for sale. I've seen a few rigs with the little plaque on the back that says flex fuel, but IDK where you'd buy any around here. How often are you hauling? Seems like a lot of fuel for a 30 mile round trip unless your doing it 4x a week or something. Which if that's the case, depending on how much you can haul, several cords of firewood for $300 gas money isn't a bad deal

Ok I just went out and read the tag again and it actually says flexfuel 85. So 15% ethanol.

My opinion for what it's worth. Keep proper air pressure in tires, clean oil, clean air filter and spark plugs in good condition. Nothing more you can do.

I’ve been trailering almost a cord everyday. But it will take me about 50 to 60 more trips to haul the rest I have already cut. It’s all white oak and really heavy.
I’m skeptical about all the ethanol that’s why I’m asking.

Thanks guys

I have a 17 Tundra Flex Fuel and I tried one tank of the cheaper fuel and could watch the fuel gage move just riding down the road. No real savings with the reduced fuel mileage.

I just stick with the regular 10% ethanol.

I use the 88 octane just fine
Mileage dropped about the time I put on LT tires instead of passenger

I remember driving through one state and it was the only “regular “ fuel available.
Did not harm my truck, I didn’t track mileage…..

First, since I've never heard any different, let's assume your flex fuel is fine for your truck.

Now you need to know your mileage. Check it with regular gas, and again with the ethanol.

You need to calculate the price per mile. Price per gallon divided by miles per gallon with a particular fuel= price per mile with that fuel.

The better number is the more economical for you to haul.

Has anyone noticed the ethanol being harder on certain parts than the regular old gas? I started buying non ethanol for my chainsaws, because I noticed that I kept eating up the little rubber boot behind the carb on my 661's, then they get an air leak and run like (This word is not allowed on Trapperman).

Good idea. Ethanol gas is not recommended for chainsaws. It is for a lot of later model trucks.

Generally a .20 cents difference here. It’s got to be.30 for me to make up drop in mileage. In my truck there’s a definite mileage difference.

I run aviation fuel in mine. 5 year shelf life, zero ethanol, and still has lead if I'm remembering right. Also mix it at 32 to 1. My Saws are tuned and souped up some. never have an issue with a gumbed up carb or any fuel issues.

My saws are all woods ported by Mr.Egan down in Idaho. I'm just using them to fall timber most of the year, and I cut maybe 100 cords of firewood every winter, but I use my older saws for that (I won't pack a saw with more than a year on it out into the brush, I can't have down time when I'm paid by the thousand board feet). I have one that requires av gas to run, but it's hard to come by up here, so I haven't ever had one built that hot again.

trapjunkie has a four stroke in his Sequoia. Pretty sure chainsaw comparisons don't apply.