30 replies to this topic

[Johnny D]

I pump it out from my FPR in the trunk.

Tank need to come out?

Can I put a gas treatment in?

J~

[Mike Collins]

You probably have a rusty tank...

[RazerX]

Johnny, sounds like a winter project.  

[Keith Novak]

I have the same symptom when drinking beer on a hot day.

[Brandon]

Keith, you're not drinking dark enough beer then....

[Jim Drago]

I pump it out from my FPR in the trunk.

Tank need to come out?

Can I put a gas treatment in?

J~

 

It is not a rusty tank( at least  in our case), I see the same thing in five different cars, routinely..  Maybe one of our petroleum engineers has an answer for us. 

[FTodaro]

Oxidation

 

A freshly-cut apple turns brown, a bicycle fender becomes rusty and a copper penny suddenly turns green. What do all of these events have in common? They are all examples of a process called oxidation.

Oxidation is defined as the interaction between oxygen molecules and all the different substances they may contact, from metal to living tissue. Technically, however, with the discovery of electrons, oxidation came to be more precisely defined as the loss of at least one electron when two or more substances interact. Those substances may or may not include oxygen. (Incidentally, the opposite of oxidation is reduction — the addition of at least one electron when substances come into contact with each other.) Sometimes oxidation is not such a bad thing, as in the formation of super-durable anodized aluminum. Other times, oxidation can be destructive, such as the rusting of an automobile or the spoiling of fresh fruit.

 

Frank - Petroleum engineer at large.

[Johnny D]

So my gas is rusting, not the tank ?? 

 

This is like over a day or 2 period of time.

J~

[Jim Drago]

 

 

This is like over a day or 2 period of time.

J~

 

 

Same here

[Bench Racer]

Oxygenates may increase the rate of oxidation. 

[Johnny D]

So nothing turns gas darker except rust ??

Not heat ?

J~

[Keith Novak]

When I store gas outside in my shed, it comes out a lot darker than it started so heat will definitely do that.  I put it in my truck...which may explain why my truck is having issues.

[Johnny D]

I'll try this tonight unless someone else wants to with known dark gas car.

Pump it out, add, and pump it out, if nothing,

add and leave for a day or two and pump.

J~

[Jim Drago]

Oxygenates may increase the rate of oxidation. 

 

My 'good" gas stays the same color.. just this legal stuff giving me trouble

[Bench Racer]

Ethanol gas brings water to the party.

[NPiekarski]

Time for pad-locks on your filler doors. Downtown Tommy Brown might be giving all your cars shots of Jager at night time.

[Johnny D]

I was thinking something different than Jager after the dark beer comment. 

J~

[Bruce Wilson]

I would be popping the top of the tank to take a look.  I once had a piece of one of those rubber jug gaskets break and fall into the tank during a fill.  Somebody saw a glimpse of something but wasn't sure if it was just a shadow, so we blew it off as just one too many beers the night before.  A race weekend later and I started to having a fuel cut out at a National race.  All things pointed to fuel, so I popped the top off the tank and found the pump screen covered in a black goo, the gasket had essentially melted in the tank of fuel. I'm guessing tank heat radiating from exhaust probably helped it along.

[Johnny D]

I will at least looking for rust. But Jims " I see the same thing in five different cars, routinely" comment, you think this ??

J~

[Ron Alan]

It only takes a second to pop out the fuel pump as well as look in the tank