SAAC Forum

The Cars => 1969-1970 Boss 302/429 => Topic started by: deathsled on May 31, 2021, 01:02:18 PM

Title: Old gas question
Post by: deathsled on May 31, 2021, 01:02:18 PM
There is gas in my dad's 2013 Boss 302LG(my 2013? lol)  which has been in the tank for about two years now (though it was treated with Stabil beforehand).  The car is not street driven and in essence, is in storage, though I have been able to run the gas down to half a tank over that time space just by idling and going back and forth in the driveway from time to time.  I just went and bought 5 gallons of fresh 93 octane (at $4.14 per gallon missing 2019 already) so my plan is to dilute the old gas, add another can of Stabil and resume the status quo.  Am I off base here?  I tried to drain the gas with a syphon but seemed to be something blocking it from going deeper into the tank.  I read somewhere that if one fishes around with the syphon enough you can bypass the blockage (which I did once or twice) but the hose needs to be super long.  Suggestions?
Title: Re: Old gas question
Post by: trotrof1 on May 31, 2021, 01:42:21 PM
Pretty sure there is a backflash valve fitted to the tank inlet. You may have to disconnect the fuel fill pipe at that point and pop the valve out temporarily or run your siphon hose past it. Its just a plastic valve that hinges as a one way deal.
Title: Re: Old gas question
Post by: gt350shelb on May 31, 2021, 02:04:55 PM
Yep there is a flap in top of the tank .....  its easier to disconnect fuel filter and pump fuel out of tank  at the filter . If you are not using the car its better to  leave less fuel in new cars .... they have plastic tanks and stainless fuel lines that survive the rotten fuel we are delt  these days .  the new fuel is pretty much trash after 6 months of sitting in the tank .  store it with race fuel  is a better option .
Title: Re: Old gas question
Post by: 98SVT - was 06GT on May 31, 2021, 03:32:55 PM
There is a kit - but I don't know if it will work under the BOSS engine cover. https://www.jpcracing.com/jpc-2011-up-mustang-gt-fuel-drain-kit/
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 07:18:29 PM
Quote from: deathsled on May 31, 2021, 01:02:18 PM
There is gas in my dad's 2013 Boss 302LG(my 2013? lol)  which has been in the tank for about two years now (though it was treated with Stabil beforehand).  The car is not street driven and in essence, is in storage, though I have been able to run the gas down to half a tank over that time space just by idling and going back and forth in the driveway from time to time.  I just went and bought 5 gallons of fresh 93 octane (at $4.14 per gallon missing 2019 already) so my plan is to dilute the old gas, add another can of Stabil and resume the status quo.  Am I off base here?  I tried to drain the gas with a syphon but seemed to be something blocking it from going deeper into the tank.  I read somewhere that if one fishes around with the syphon enough you can bypass the blockage (which I did once or twice) but the hose needs to be super long.  Suggestions?

two years is stretching it with stabil, but you had it in storage inside.

you can chance it and start it or as someone mentioned previously drain the old fuel and add fresh, would even change the fuel filter
Title: Re: Old gas question
Post by: trotrof1 on May 31, 2021, 08:38:30 PM
Typically the only fuel filter would be a screen attached to the pump inside the tank. Should be OK.
Title: Re: Old gas question
Post by: 67 GT350 on May 31, 2021, 08:39:38 PM
If it is running good, drive it hard (Fun), to drain the gas down, then fill it up, FULL, with new stabilizer, and that should be good. Newer cars need to be driven. I would never buy a car that was sitting in time. I did that one time, and I ended up with a new engine, transmission, and brake system, oh and Power steering system.
When I bought my Ford GT, I bought a "High mileage" car (13K miles), had it checked out by Rich Brooks and it got a clean bill of health. I was told that the 6K and less mile FGT's needed belts/fluids/tires.
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 08:44:39 PM
Quote from: trotrof1 on May 31, 2021, 08:38:30 PM
Typically the only fuel filter would be a screen attached to the pump inside the tank. Should be OK.

Nope
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 08:47:49 PM
Fuel filter is located under a big black plastic cover on the under-body. It is located more or less below the seat area. You can follow the fuel lines from the tank. Once you take the cover off, you should see the metal filter. You need a special tool to take the clips off.  Yes I k ow some experts use pliers and a screw driver. I have yet to achieve that proficiency level.

Good luck with your situation

Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 08:48:44 PM
Forgot to point out it's under the drivers side
Title: Re: Old gas question
Post by: trotrof1 on May 31, 2021, 08:59:01 PM
This cat is ON IT.  But hey what about a Ford part# on that filter big guy.
Title: Re: Old gas question
Post by: 98SVT - was 06GT on May 31, 2021, 09:04:10 PM
Quote from: FL SAAC on May 31, 2021, 08:48:44 PM
Forgot to point out it's under the drivers side
I've heard 2011 up only has the filter in the tank not an inline one.
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 09:20:53 PM
Hi trot

Don't know what number is on the filter, picture was used as an illustration

Quick question,   whats your pick Burger King or McDonald's ?


Quote from: trotrof1 on May 31, 2021, 08:59:01 PM
This cat is ON IT.  But hey what about a Ford part# on that filter big guy.
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 09:22:30 PM
Quote from: 98SVT - was 06GT on May 31, 2021, 09:04:10 PM
Quote from: FL SAAC on May 31, 2021, 08:48:44 PM
Forgot to point out it's under the drivers side
I've heard 2011 up only has the filter in the tank not an inline one.

You know you just maybe correct.....just maybe....cheers !
Title: Re: Old gas question
Post by: trotrof1 on May 31, 2021, 09:42:03 PM
Answer a question with a question?  I avoid fast food. A burger KING sounds too authoritative and Clowns creep me out.
Title: Re: Old gas question
Post by: FL SAAC on May 31, 2021, 09:50:19 PM
Quote from: trotrof1 on May 31, 2021, 09:42:03 PM
Answer a question with a question?  I avoid fast food. A burger KING sounds too authoritative and Clowns creep me out.

How maieutic.......back to the topic at hand:

Just release the gas
Title: Re: Old gas question
Post by: trotrof1 on May 31, 2021, 09:59:49 PM
Maieutic? I resemble that remark.  For the love of Christ go outside to release the gas.
Title: Re: Old gas question
Post by: deathsled on May 31, 2021, 10:04:07 PM
I had to look up that word myself.  Socratic method.  I ended up pouring 5 gallons of fresh gas in and will run the motor a bit then top up with another 5 gallons and add a can of Stabil.
Title: Re: Old gas question
Post by: FL SAAC on June 01, 2021, 07:39:07 AM
Quote from: trotrof1 on May 31, 2021, 09:59:49 PM
Maieutic? I resemble that remark.  For the love of Christ go outside to release the gas.

Maieutic , answering a question with a question,  yes. LMAO
Title: Re: Old gas question
Post by: FL SAAC on June 01, 2021, 07:40:04 AM
Quote from: deathsled on May 31, 2021, 10:04:07 PM
I had to look up that word myself.  Socratic method.  I ended up pouring 5 gallons of fresh gas in and will run the motor a bit then top up with another 5 gallons and add a can of Stabil.

Good morning Richard E
Go for it and run the threads off the tires!
Title: Re: Old gas question
Post by: Tired Sheep on June 01, 2021, 08:32:25 AM
Diluting the old gas is essential

Im lucky enough to have a fast moving stream nearby, its usually gone in minutes
Title: Re: Old gas question
Post by: FL SAAC on June 02, 2021, 08:15:59 AM
remember that the product is good for one year on the date you originally opened it.

Title: Re: Old gas question
Post by: deathsled on June 02, 2021, 07:36:22 PM
Quote from: FL SAAC on June 02, 2021, 08:15:59 AM
remember that the product is good for one year on the date you originally opened it.

Right.  And thanks.  I bought a new bottle to add.  Going to run the gas down again in the driveway and consensus is to add racing gas.  I will have to find some somewhere.  Road Warrior style.
Title: Re: Old gas question
Post by: mikeh on June 06, 2021, 01:31:31 PM
Aviation gas is good too!