Is mid grade gas dyed yellow?

[The motor guy]

Always thought it was the old gas in my boat, but I've poured put some 6 month old 87 gas and it still had that nice fresh light blue hue to it.

 

[Timmastertech]

No, its not. At most stations the only fuel in the tanks is whatever the lowest octane rating is and whatever the highest is. They are blended in the dispenser (known as a blend pump) for any mid grades (89 is 70 percent 87 and 30 percent 93). Unleaded fuels are not dyed.

 

[Chris142]

isnt here

 

[The_Jeff]

Gas is a mix of "I don't care" chemistry and can be clear to yellow.

The only dye is red, to indicate it hasn't been road taxed.

And my "I don't care", they do care. You can go to a paint store and buy all the stuff in gasoline for $25/gallon. The price is in the purity. They just get it in the ballpark and tweak it until its saleable.

 

[jhellwig]

No, its not. At most stations the only fuel in the tanks is whatever the lowest octane rating is and whatever the highest is. They are blended in the dispenser (known as a blend pump) for any mid grades (89 is 70 percent 87 and 30 percent 93). Unleaded fuels are not dyed.

Most stations do not have blender pumps. It is blended at the terminals.


No dye is added to gasoline in the USA. Color is determined by what they are making it out of at any given time.

 

[Timmastertech]

Most stations do not have blender pumps. It is blended at the terminals.


No dye is added to gasoline in the USA. Color is determined by what they are making it out of at any given time.

No, most stations are blenders. ANy station that has more than one grade of fuel coming out of the same hose/nozzle is a blender. Its more efficient to blend for octane on site because you only have to inventory 2 grades of fuel, which are the two most popular. Mid grades sell a fraction of the amount of regular or super (I sold mobil fuel for a long time, so I tend to refer to fuel grades as regular, special (mid grade) and super (high test)). Additive packages are added at the terminal. but most stations blend for octane rating

 

[GMBoy]

No, most stations are blenders. ANy station that has more than one grade of fuel coming out of the same hose/nozzle is a blender. Its more efficient to blend for octane on site because you only have to inventory 2 grades of fuel, which are the two most popular. Mid grades sell a fraction of the amount of regular or super (I sold mobil fuel for a long time, so I tend to refer to fuel grades as regular, special (mid grade) and super (high test)). Additive packages are added at the terminal. but most stations blend for octane rating

True. I remember back in the day the local Sunoco had an incredible pump that had 86, 88, 90 and 94 if I recall correctly all mixed at the pump- it was insane lol

 

[The motor guy]

No, most stations are blenders. ANy station that has more than one grade of fuel coming out of the same hose/nozzle is a blender. Its more efficient to blend for octane on site because you only have to inventory 2 grades of fuel, which are the two most popular. Mid grades sell a fraction of the amount of regular or super (I sold mobil fuel for a long time, so I tend to refer to fuel grades as regular, special (mid grade) and super (high test)). Additive packages are added at the terminal. but most stations blend for octane rating

Thats my understanding. They mix the 87 and 93 here. Not sire how they figure in 89 octane. Must be only a little 93 added into the 87 to bring it up to 89.

 

[jeepman3071]

6 month old fuel is asking for trouble.

 

[2013ecof150]

I always thought 89 octane was a 65/35 blend of 87/93 octane done at the pump, unless the 3 grades had separate pumps.

Back in the early 2000’s I used to go to West Va to visit my grandmother. There was a Sunoco station near her house that had 86,87,89,92 and 94 all at one pump. I had never seen anything like that before. The 86 octane was one cent cheaper than the 87.

 

[y_p_w]

I always thought 89 octane was a 65/35 blend of 87/93 octane done at the pump, unless the 3 grades had separate pumps.

Back in the early 2000’s I used to go to West Va to visit my grandmother. There was a Sunoco station near her house that had 86,87,89,92 and 94 all at one pump. I had never seen anything like that before. The 86 octane was one cent cheaper than the 87.

Depends. I think now it's probably most likely done with a blending pump. I did ask a fuel delivery driver once, and he said he had 89 in the tank and showed me the seam that separated two compartments.

And for the other comments, there are fuel dyes used in gasoline. Not sure exactly what they represent other than maybe red for untaxed off-road fuel and blue for typical 100 octane racing unleaded. But here's a sample:

https://www3.epa.gov/otaq/fuels1/ffars/web-gas.htm​

​

Basf Corporation​

SUDAN Red 380 Liquid Dye (BASF)​

SUDAN Yellow 146 Liquid Dye (BASF)​

​

ET Products LLC​

Blue Dye​

Green Dye​

Purple Dye​

Blue Dye​

​

Innospec Fuel Specialties​

duPont Oil Blue A Powder Dye​

duPont Oil Blue HF Liquid Dye​

duPont Oil Bronze Liquid Dye​

duPont Oil Brown HF Liquid Dye​

duPont Oil Brown M Liquid Dye​

duPont Oil Color IAP Liquid Dye​

duPont Oil Green HF Liquid Dye​

duPont Oil Orange Powder/Flake Dye​

duPont Oil Purple M Liquid Dye​

duPont Oil Red HF Liquid Dye​

duPont Oil Red Powder/Flake Dye​

I've seen gasoline that's clearly been dyed yellow, but I'm not sure what for. I mentioned blue, which some call "Smurf gas" because of the blue dye.

 

[MolaKule]

You can go to a paint store and buy all the stuff in gasoline for $25/gallon. The price is in the purity. They just get it in the ballpark and tweak it until its saleable.

What components are those?

 

[The motor guy]

So what turned my gas neon yellow?