How Long Before Fuel Goes Bad?

phase seperation will cause the fuel system to get gunked up and or filled with water
ethanol will allow slime to grow in the system, especially on screen filters such as int he bottom of fuel injection tanks (VST)
low octane will cause detonation
adding higher octane has to help, but to me, its just not worth the risk

I’m now at www.teamcharlestonmarine.com

Does anyone know if marine stabil and quickleen treated gas would be bad for use in a car? Getting ready to pump about 20 gallons out and need to do something with it. Thanks

The best way to a fisherman’s heart is through his fly.

quote:
Originally posted by cdub

Does anyone know if marine stabil and quickleen treated gas would be bad for use in a car? Getting ready to pump about 20 gallons out and need to do something with it. Thanks

The best way to a fisherman’s heart is through his fly.


No, it will not hurt.

cars, trucks & some marine engines also have knock sensors which modify the timing to prevent detonation, alot more forgiving.

I have a 2000 Yamaha SW Series w/ EFI. I always run 93 octane the last run of the year. Try to run it as low as possible in the tank (kept it full prior to ethanol issues). Then stabilize with marine stabil, and run for at least 15 minutes afterwards. It sits for generally 6 months (I live 4 hrs from the coast). After about 3 months, I add another half dose of stabil and then follow with 1/2 gal of fresh gas but do not run. I move the trailer to try to disseminate the new stabil. I fill up with 93 octane in the spring before use, and it has always cranked up on the first start.

Ben Miller

miller
whats your reasoning for adding the 1/2 gallon of fresh gas?
just wondering

I’m now at www.teamcharlestonmarine.com

Ethanol has been a real success story hasn’t it? It cost more, produces less power, reduces mileage…and it screws up engines and fuel systems and causes gas to go bad. At least the corn farmers in Iowa are happy.

quote:
Originally posted by Etiwan

Ethanol has been a real success story hasn’t it? It cost more, produces less power, reduces mileage…and it screws up engines and fuel systems and causes gas to go bad. At least the corn farmers in Iowa are happy.


And it increases the amount we pay at the grocery store…

Health care next!

Sea Hunt 2002
Yamaha 150

Chris, I add the additional fresh gas to wash the stabil thru the fill line to the tank since it’s a relatively small volume. I suppose I could just mix the stabil in with the gas as well, and it would accomplish the same thing. I just don’t want the stabil sitting in concentrated form in the fill line.

Ben Miller

Startron Testimonial:
I made it down to Magwoods to clean up the boat and drain the fuel. I was expecting the worst in terms of water content and phase seperation but was pleasantly surprised.

I have not even laid eyes on the boat since Halloween and the fuel was 3 months old then. The bowl on the Racor was clear before I started but figured it would crap up as I started pumping. I drained the entire contents of the filter into a mason jar before I started and it looked like new gas. I pumped 5 gallons (thru the Racor)and took a sample. Looked like new gas and the Racor bowl was still clear. Dumped that jug into the truck and filled another one for my truck which put me at full. A nice young man came up to buy 6 gallons in a portable tank and I saved him 20 bucks by filling him up. I still had more so I gave a hardworking oysterer 5 gallons for his truck. He was nice enough to offer me a bushel of oysters but I declined. I gave John 10 gallons or so for his truck and this emptied me. The Racor never crapped up and every drop of the gas “looked” like new gas.

Bottom line is that Startron DOES IT’S JOB!! I’m sure the octane was low and no way will I trust low octane fuel in my brand new Opti hence the exercise. I plan to fill up with non-ethanol fuel from Shem Creek Marina but will definitely use Startron.

I should mention that the Startron came from Charleston Marine and I really believe that his Startron is more effective than the same from somebody else. His mud minners always seem to catch more fish as well. YMMV

Triton 22 LTS
225 Opti

Okay, here’s my experiment for this years round of E-10 issues. I bought 3 gallons of E-10 gasoline, the last week of Nov. '09, with the intent of saving it until now, try it, and see what happens. It was treated with the proper amounts of Marine Sta-bil, and Seafoam when purchased. Last Sunday I pulled the tank out, and hooked it up to one of my 9.9 Tohatsu’s, and put the 'muffs on. The motor had been run dry for winter storage. A few pumps of the bulb, and a push on the start button, and she was purring like a kitten.
After a few minutes the engine started to miss, and cough. An almost pure white smoke was coming from the exhaust. It was then that I noticed a greyish sludge coming from between the lower unit housing and the prop. and the thru-prop exhaust. I thought that I had blown water into the foot from the pressure from the hose, and blown a seal. I ran the motor dry, and proceeded to remove the foot, thinking that I was in for a seal kit replacement. I’m not sure what made me check the lube in the foot, but I did, and it was like new! I installed the foot, restarted the motor, and the same thing happened.
Now I went to a local station that sells pure gasoline only, bought 3 more gallons, added 2 stroke oil only, and headed back to the house. After draining the fuel line completely, I pumped the fresh, pure gas into the carb. and tried starting. After several minutes the motor finally coughed, and sputtered to life. The longer it ran, the better it ran. The grey sludge had stopped, and was falling on to the driveway, and washing away with the water. The smoke was to a minimal. I’m not sure what the sludge was, but I know it was from the E-10! Oh yeah, I forgot to mention upon inspection, the E-10, in the first tank looked normal. No separation, sludge, or any reason to suspect anything other than normal! Well, that’s the extent of my experiment, hope someone besides me may learn something from it. Seeya, Scott

The cost of Liberty, is eternal vigilance!!

2 strokes need oil.

quote:
Originally posted by Ithaca37

2 strokes need oil.


Not Diesel 2 strokers!

The cost of Liberty, is eternal vigilance!!

Why the sea foam if the fuel was treated with sta-bil? Have not had a single problem with startron treated fuel that is going on 6 months old, 550 gals worth.

Russ B.
God is great, Beer is good, People are crazy

quote:
Originally posted by Top2Bottom1

Why the sea foam if the fuel was treated with sta-bil? Have not had a single problem with startron treated fuel that is going on 6 months old, 550 gals worth.

Russ B.
God is great, Beer is good, People are crazy


I try to always use Sea foam, it's a great product. Sta bil Marine on the other hand in my opinion, is truly misleading consumers by even putting Ethanol Formula on the label! I'm not going to go through the same old BS as last spring, but read Sta bil's instructions, it's by their own admission, simply a treatment for moisture in the fuel system. Nothing to do with stabilizing the fuel! I always use pure gasoline, and don't see the need for a stabilizer, but I knew from all the posts last year, that as soon as the weather started warming up, the questions were not going to be far behind. This was simply an experiment by me to see first hand the effects of using old E-10 fuel, nothing more. I only hope others can benefit from it!! By the way, I use Sea Foam to cut down on carbon build up, not as a fuel stabilizer. seeya, Scott

The cost of Liberty, is eternal vigilance!!

Ok, was wondering why the sea foam and the sta bil. Startron so far has treated me well! (knock on wood!)

Russ B.
God is great, Beer is good, People are crazy

quote:
Originally posted by Mixed Nutz
quote:
Originally posted by Top2Bottom1

Why the sea foam if the fuel was treated with sta-bil? Have not had a single problem with startron treated fuel that is going on 6 months old, 550 gals worth.

Russ B.
God is great, Beer is good, People are crazy


I try to always use Sea foam, it's a great product. Sta bil Marine on the other hand in my opinion, is truly misleading consumers by even putting Ethanol Formula on the label! I'm not going to go through the same old BS as last spring, but read Sta bil's instructions, it's by their own admission, simply a treatment for moisture in the fuel system. Nothing to do with stabilizing the fuel! I always use pure gasoline, and don't see the need for a stabilizer, but I knew from all the posts last year, that as soon as the weather started warming up, the questions were not going to be far behind. This was simply an experiment by me to see first hand the effects of using old E-10 fuel, nothing more. I only hope others can benefit from it!! By the way, I use Sea Foam to cut down on carbon build up, not as a fuel stabilizer. seeya, Scott

The cost of Liberty, is eternal vigilance!!


Next time you need some sea form, let me know. I’ll hook you up.

sea form?.. are you tuggin’ on the ol’ bottle again Captain Dave?

The cost of Liberty, is eternal vigilance!!

My experiment (by accident due to weather and work) yielded much different results…

I had 8-9 gallons of 4-month old untreated E-10, pre-mixed gasoline in a 12-gallon tank hooked to my 70 Evinrude. I did not drain the carbs, nor did I run them dry. I did, however, run it for 5 minutes or so in a barrel once in mid-Dec. and again in mid-Jan.

Two weeks ago, I took it out and it started right up. After some initial smoking typical with older 2-strokes, it idled just fine and ran like a raped ape for as long as I wanted it to. It held 5500 RPM’s and then idled back to the dock with no problems. I loaded it up, took it home, flushed it out and put it away with less than 5 gallons of gas left.

Now, my 200 Suzuki is a different story… I just pumped out about 40 gallons of Stabil Marine Formula treated 89 octane gas that has been in there since Nov. and put it in my wife’s Bimmer, the Jeep and my Tundra and will be topping off the boat’s fuel tank today with Stabil Marine and 93 octane. All three vehicles are running fine and the Suzuki started right up on the 4-month old, treated gasoline with no smoking or coughing and I even forgot to squeeze the primer bulb before starting it.

I just wanted to share my results as yours may vary.