Oily feeling gasoline that leaves a yellow residue after (eventually) evaporating??

[Chotu]

Originally Posted by Jammer

I'm not buying it.

There are, fundamentally, two differences between summer gasoline and winter gasoline:

1. Winter gasoline includes lighter fractions with a low boiling point, such as butane, to improve cold weather starting. Summer gasoline does not, because it tends to increase vapor pressure and reduce fuel economy.

2. At least in colder regions, winter gasoline does not contain the same NOx-reducing additives that summer gasoline contains, such as ethanol, ETBE, MTBE, etc.

If there is yellow crud from switching over it would be because of contaminated tanks or piping, deteriorated feedstocks, etc.

Nonetheless I would still just use it up if it were my boat. Again, good luck.

Hmmmm.

I sure hope it doesn’t cause the engine damage.

I will be trying it in the next couple days. And my strategy is this.

I’m going to immediately switch over to it and try it. Rather than switching over when I’m in the middle of the Pamlico sound.

That way if there is going to be a problem, it will be on the way out of the harbor.

[poiu]

I just had a gas spill. Hoisted the dink at an angle and fuel dribbled out of the breather fitting overnight. A big yellow stain was left behind.

[Chotu]

The gas is ok!

I switched to the most iffy tank an hour ago and no change in the engines.

This is my last day, however, so it will sit for a month or so while the rigging is being done.

I put stabil in while I was filling the tanks in anticipation of this.

[thomm225]

I was using gas from last October until this past weekend when I bought new and poured the rest in my Jeep which was about a gallon from my 2.5 gallon plastic jug.

There was still an inch or so in my 3 gallon tank and I poured in a gallon or so of fresh plus more Sta-Bil so that should be good as well.

Sta-Bil Red is suppose to allow gas to be stored for up to 2 years

[Chotu]

I used the blue marine stuff this time.

Have stored gas with the red for 3 years and it was still good enough to work.

For instance, the first gas of this trip was that old gas.

[rslifkin]

I've used both the red and blue Sta-bil with good results. The better sealed the tanks the gas is stored in, the longer it lasts. I've had no issues with year old gas in my vented boat tanks. I've used 2 year old gas without issue in well sealed gas cans and tanks in cars.

[BlueH2Obound]

Jammer, you forgot PURPLE! Of course, it's been a LONG time since 115/145 was available . . . .

[Chotu]

And I’ve burned almost 1/4 of a tank today already. Engines are humming along normally.

It’s pretty warm down here. I think spring is coming for you north east guys.

[thinwater]

Stabil 360 Marine (blue) is for e10, and yes, it is very different from red if you have e10 (I've tested both, lab and field). It was reformulated shortly after e10 came out and they were having corrosion protection shortcomings relative to better competitors (Biobor EB and Merc).


Yes, the yellow was probably a little diesel mixed in. Lamentably common.

[Chotu]

Originally Posted by thinwater

Stabil 360 Marine (blue) is for e10, and yes, it is very different from red if you have e10 (I've tested both, lab and field). It was reformulated shortly after e10 came out and they were having corrosion protection shortcomings relative to better competitors (Biobor EB and Merc).


Yes, the yellow was probably a little diesel mixed in. Lamentably common.

Is the blue like “red+ ?” As in it’s still stabilizes fuel, but has other stuff to help with ethanol?

The gas sure was greasy like Diesel would be. I guess a little more lubrication for my two stroke engines. Not too bad.

[Jammer]

Originally Posted by thinwater

I've tested both, lab and field

Did they do anything? Through what mechanism of action?

[thinwater]

Originally Posted by Jammer

Did they do anything? Through what mechanism of action?

I said "reformulated." A change in composition. To say more would get deep into proprietary information and organic chemistry, but you can test them side-by-side for corrosion protection and see.


And no, storage and anti-corrosion additives are NOT related to 2-stroke lubrication. That is a separate topic. And no, 2-stroke oil does not significantly stabilize gas or protect against ethanol corrosion. I've tested that too.

[Chotu]

Originally Posted by thinwater

And no, storage and anti-corrosion additives are NOT related to 2-stroke lubrication. That is a separate topic. And no, 2-stroke oil does not significantly stabilize gas or protect against ethanol corrosion. I've tested that too.

Huh?

I didn’t say any of that. I think you misinterpreted my post by a long shot.

Added lubrication for the two-stroke comes from the diesel/gas mix I most likely got. That makes the most sense. It’s greasy. It’s yellow. It leaves an oily mark and doesn’t act like a solvent in the atmosphere. There is definitely some lubrication there.

And I have no idea where you are going with two-stroke oil stabilizing gas or protecting against ethanol corrosion. Nobody said that at all. Not even close.

Plus it’s fuel injection and oil injection in this case. They are never mixed until the intake

[thinwater]

Originally Posted by Chotu

Huh?

I didn’t say any of that. I think you misinterpreted my post by a long shot.

Added lubrication for the two-stroke comes from the diesel/gas mix I most likely got. That makes the most sense. It’s greasy. It’s yellow. It leaves an oily mark and doesn’t act like a solvent in the atmosphere. There is definitely some lubrication there.

And I have no idea where you are going with two-stroke oil stabilizing gas or protecting against ethanol corrosion. Nobody said that at all. Not even close.

Plus it’s fuel injection and oil injection in this case. They are never mixed until the intake

Not every word is a response, and this was not a response to you, it was a response to Jammer's question. Forums are a water cooler conversation and wander far from the OP's intent and control.

Questions about 2-stroke oil's effects and the effects of additives are common. I merely pointed out two very common misconceptions.

BTW, I mentioned 2 posts earlier that it was almost certainly diesel contamination. That diesel will provide some lubrication is obvious. In the 3rd world it is common to use both diesel and biodiesel in 2-strokes for this reason, though it is also held to be an inferior practice. As for just burning through it, the worst that is likely are slightly fouled plugs and some intake valve deposits. Best of luck.

[Chotu]

Originally Posted by thinwater

Not every word is a response, and this was not a response to you, it was a response to Jammer's question. Forums are a water cooler conversation and wander far from the OP's intent and control.

Questions about 2-stroke oil's effects and the effects of additives are common. I merely pointed out two very common misconceptions.

BTW, I mentioned 2 posts earlier that it was almost certainly diesel contamination. That diesel will provide some lubrication is obvious. In the 3rd world it is common to use both diesel and biodiesel in 2-strokes for this reason, though it is also held to be an inferior practice. As for just burning through it, the worst that is likely are slightly fouled plugs and some intake valve deposits. Best of luck.

Oh boy. OK.


I was the only person in here talking about two strokes and lubrication so I thought you were talking straight to me.


I didn’t know it had sparked a tangential thought. My apologies.