Why is my fuel this color?

[phmorgan88]

Tested fuel and fuel lines yesterday on my oil injected Mercury Outboard 4 cyl 2 stroke. I have an aluminum fuel tank under my console.

In the picture shown.. is this gas bad? It either looks like algae or oil is mixed in.

Does this mean there is sludge in the bottom of my fuel tank or is this just the proper oil/gas mixture?

Thank you

 

[Chris1956]

Re: Why is my fuel this color?

The pictures are not larg enough to see the color properly. It looks like blue/green colored gasoline. That is pretty much the color I get when I mix my Wallyworld TC-WIII oil and gas at 50::1.

Why not mix up some fresh fuel and compare color?

 

[MH Hawker]

Re: Why is my fuel this color?

it looks like it has separated to me

 

[phmorgan88]

Re: Why is my fuel this color?

Good point, ill mix some. I haven't ran my boat in 4-5 months. I had the boat motor trimmed up due to limited space. I usually like to leave it upright. Just seemed odd to me. I'll try to upload a bigger pic. Said the file was too large

 

[phmorgan88]

Re: Why is my fuel this color?



The sample on the right I obtained first, it's darker. Found some debris from my fuel lines cracking, going to replace them.

 

[MH Hawker]

Re: Why is my fuel this color?

It looks like you have standard E 85 ethanol gas and didn't treat it with any thing to stabilize it and let it sit to long and it had phase separated.

 

[Strawn M]

Re: Why is my fuel this color?

In the first post you said the engine was oil injected, why are you pre mixing?

 

[Chris1956]

Re: Why is my fuel this color?

When fuel phase seperates, the oil and alcohol seperate from the gasoline. Now oil and water do not mix, so the oil seperates as well, leaving the alcohol and water mix colorless, and at the bottom of the fuel tank. That is not what I see in the picture.