I have a brand new F350 2024 and with the first tank of fuel from the stealership I was getting 14Mpg. After adding this to the 2nd tank it jumped to 19MPG and the truck really did seem to run smoother. I have been using this stuff for years in my Kubotas but honestly you can't tell in them other than I have never had any of my cans or tractor's GEL up in the winter and i've added nothing else. It's noticeable in my truck so I will be sticking with it.
Avec le climat changeant du Québec, qui passe de 5 à -20, je ne me soucis plus du niveau du réservoir de mon camion... Il est toujours prêt à travailler même à -30:) En plus il est un peu moins paresseux:)
No gelling/fuel filter plugging on either my 3.0l duramax or my x5 diesel. Will continue using the product 👍
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
So far, so good
By 
KEN, 
a 
Verified Buyer 
from 
North Jersey 
on 
February 23, 2024
I've been using this in my 2018 6.6L Duramax and my son's 2007 6.6L Duramax (While he's out of the country) since it began with the cold weather, making sure to dump it in just prior to fueling. I've had no issues whatsoever with either truck. I run them both for longer trips at least once a week and mine I run around 'town' all the time. NOTE: This winter has not been particularly cold so it looks like the All-In-One is doing just fine. If the winters get bitterly cold you may have to add some Amsoil Cold Flow to aid in the volume of fuel to cold ratio since the amount of the other additives must take up some room in the 16 oz bottle. I must also say the reverse ounce labeling on the side of the bottle makes it very easy to tell how much you're putting in the tank, well done! On a final note, it is extremely handy to have the four additives "All-In-One!"
Even at our rural address orders are the next day delivered, that's awesome and AMSOIL is the benchmark for quality products. Even in the coldest temps and harsh conditions this Diesel treatment works.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Go fast
By 
ANDREW, 
a 
Verified Buyer 
from 
California  
on 
February 19, 2024
Keeps the old girl purring
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great product
By 
KENNETH, 
a 
Verified Buyer 
from 
South Dakota  
on 
February 18, 2024
Haven’t had any gelling issues with #2 fuel at 0 degrees
I’m using Amsoil for a long time.. oil, coolant , additives… and, as usual and always, all the products works just great. Including this winter additive; living in Chicago, I had the chance to use it for a really low temperatures , below 20, below 30, etc, and I never had an issue with the fuel being gelled up.
You have a lots of options on the market, but, for me , it’s only Amsoil . That’s it.
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