vintage gas

[WoodsWagon]

I had the bright idea of disposing of period-correct gas into my loyale. The gas came out of the tank of my 58 gmc truck that was last used in 1992, the same year my loyale rolled off the lot.

 

So yeah, 5 galons of 16 year old gas is plenty to really screw with the motor, even when the rest of the tank is filled with fresh.

 

I kinda hope the gas didn't have lead additive in it, but who the hell knows. It wasn't my brightest moment.

 

When you cold start the car, it sounds like it has no compression, just spins over fast. When you hold it floored, it begins to pop and backfire, really bad, through the intake. Eventually a cylinder will catch, and it will chug until a second one comes on line, and you can get it to 2k rpms. Any load will make it detonate like a mother. Once it warms up, the ECU goes into closed loop and all 4 cyls are good to go and it runs fine. Down on power, but smooth. Sucks getting it started though...

[The Beast I Drive]

Duh,16 year old gas probably doesnt have much octane left kinda important if you plan on burning it :cool:

[nipper]

You wanted an excuse to drain and clean the entire fuel system anyway.

 

 

nipper

[screwbaru2]

Is this why your all work and no sleep?

[3eyedwagon]

WORST

 

 

IDEA

 

 

EVER

 

 

Even more so.... why would you admit it to a board full of jerks like me???

[zukiru]

you beat me to it...

 

I was merely going to say this though,

 

 

IDIOT! lol what ever were you thinking? or were you thinking?

[MilesFox]

dump a can of that 104 octane boost, the "off road stuff" in the black can or similar. all the octane volatiles would have evaporated.

 

i have run used gas, but pouring a gas can of it into the gas already in the car.

 

if its not full top it off with fresh gas.

 

otherwise just add 5-10 gallons when you fill up and she should burn it just fine.

 

i towed cars from iowa mixing down the old gas from the car i was towing. you will smell old gas in the exhaust as it burns.

[subyrally]

a can of seafoam in the tank might also clear it up as well.

[Quidam]

Experience...the most through teacher.

[McDave]

i towed cars from iowa mixing down the old gas from the car i was towing. you will smell old gas in the exhaust as it burns.

Shoot, he might as well reuse the old '58 GMC gear oil too and really stink up the place!

 

(what's worse, old gear oil or gas?) :-p

[DaveT]

So yeah, 5 galons of 16 year old gas is plenty to really screw with the motor, even when the rest of the tank is filled with fresh.

 

The worst dead gas I have used needed about 2 gallons (dead) + 6 gallons (new) added to fill the tank. I'm not sure how old my dead gas was, it varies. The best I had ran ok straight, most was about 50/50. Best to add a gallon at a time to an almost full tank to figure out the ratio that works. Hard starting = too much dead gas. The ECU seems to adapt to it once the engine is up to temp.

 

Be sure you don't transfer any water!

 

Have not had any trouble other than 1 time I got some water in the gas filter.

 

I ran it through a 3 micron filter before it went in the car.

[WoodsWagon]

Well, as a little closer to this thread, I found out why it was so dang hard to start. The injectors were apparently not closing fully due to the sludge going through them, and fuel washing the cylinders. I would have to crank it untill enough oil got up to the rings so it would have compression, then it would start.

 

Drove it untill I used up all the old gas, filled with fresh and a bottle of Techron. Changed the engine oil (really thin and stank of old gas), and it runs right again.

 

Chalk that up to a momentary lapse of judgement.