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Tool Talk Discussion Forum

OT Fuel Stabilizer

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Chuck (VA)

01-12-2007 04:24:12

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Have a '76 Fury with 36,000 miles all original. Car will be sitting for about 6 months. Filled gas tank with fresh fuel. My mechanic states I need a gas stabilizer added since fuel has ethanol. Have never done this before and car has always started right up.

Is this a good idea? He is a good mechanic but was not even born when car was built. Most everything he works on is late model cars.

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Don L C

01-14-2007 17:11:41

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

Add "STABIL" and shake the car to mix.....then start the car and let it run about 5 min. to get treated gas in carb.....

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dan67

01-12-2007 20:00:27

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

I agree with tomtx I'am a mechanic buy trade and stablizer is a must. I also add it to my home gas tank with every load I get. Very cheap insurance

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thejdman01

01-12-2007 16:29:29

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

Use it always helps and sure wont hurt.

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jerrycpp(WA)

01-12-2007 13:53:15

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

I used Stabil one time and some green goo grew in the carb bowl. Now I put a little Marvel Mystery Oil in the fuel and run the engine enough to get that in the carb. Six months later whatever it is starts right up.

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dej(JED)

01-12-2007 09:31:03

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

You don't need it in todays gasoline for a 6 mth storage. For 6 years you might..... .....

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dan hill

01-13-2007 02:38:16

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Re: OT Fuel Stabilizer in reply to dej(JED), 01-12-2007 09:31:03

Most 6 month old gas wont start a lawn mower come spring.

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TomTX

01-12-2007 09:17:43

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

I have 11 "machines" here; 2 diesel tractors, 4 4-cycle, and 5 2-cycle. They are riding mower, push mower, chain saws, blower, trimmer, washer, welder/generator, etc. I put Stabil in every drop of gas in the cans/barrels year round. I put Power Service Diesel Fuel Additive in every drop of diesel in the cans/barrel year round.
With todays gas, I mix my 2-cycle stuff and what is left over in 2 months, I pour it into my pickup. That way you are only spending about 80 cents on the oil, and still getting the use of the gas, and always burning fresh gas mix in chainsaws, etc.
I am going on 66 years old, and in the last 40 years, I have NOT rebuilt one carb, unstuck not one needle/float,rebuilt not one injector pump, rebuilt not one injector nozzle, never had a valve stick, etc. I never even have to open the aglomerator valve to drain water on the tractor; never see water in the glass bottom to filters.
Tom

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Chuck (VA)

01-12-2007 08:02:11

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

Thanks for the explanations. Am always worried using additives in older equipment due to compatibilty with seals, etc.

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Ludwig

01-12-2007 06:33:10

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

The old snowmobiles I play with are VERY sensitive to fuel quality and yes todays fuel does degrade badly. They say fuel isn't "fresh" after 3 months... In a car 6 months probably isn't so bad but in an old sled that'll give you a stuck float needle every time.
I've used Stabil and its okay but not great. I use it at about double the concentration they suggest. Some time ago I had some fuel stabilizer from POR15>Link

Some people swear by SeaFoam gas additive as a stabilizer, they advertise it for that>Link

Finally my Farmall Super M used to stick the float needle too, fortunately on that tractor its no big deal to loosen it up (apply 5# hammer, 2 taps) but I bought some no-name brand fuel stabilizer at the discount store and adding half a can on that to whatever fuel is in the tank has made that problem go away entirely.

Basically I'm saying anything is better than nothing. Pick and additive, put it in by the directions or a bit more, run the engine awhile to make sure the stuff is mixed in good and let it be.

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rgvtx

01-12-2007 04:49:19

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Re: OT Fuel Stabilizer in reply to Chuck (VA), 01-12-2007 04:24:12

I would suggest it, and yes I'm a lot older than your Plymouth! I use the Stabil brand product, and I think there are other brands out there too. Back in the good old days gas could sit for extended periods with little or no effect, now days with all the additives it's a different story. I have a pressure washer in pieces right now that belongs to my dad. It sat for just over a year with gas in it and I'm now waiting on a new carburetor. I tried to repair this one but it's hopeless, the varnish or whatever it is that was left behind just destroyed everything. Even the float is eaten away and it's either copper or brass, never seen that happen before. By the way, Stabil is a fuel additive but most people think it mixes with the fuel but that's incorrect. It actually creates a film over the top of the gas to keep air from reaching the gas. Follow the directions on the bottle on the quantity to use. It's pretty cheap insurance by the way, large bottle is less than 10 bucks. Can't say I have ever found a carburetor kit for less than 10 bucks.

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01-12-2007 12:39:00

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Re: OT Fuel Stabilizer in reply to rgvtx, 01-12-2007 04:49:19

Just be careful what gas you put in with Sta-bil, we have a problem with Sta-bil having an alergic reaction with some gasoline. Leaves what look like tapioca pellets in the carb after putting stabil in the gas. When Sta-bil came out it was an excellant product, now that Gold Eagle has bought it out several years ago, the quality has went down hill. We don't have it in evey unit, but we do get carbs in and the customer tells us they put stabil in them and the gas still is bad. It is not a fuel additive that crates a film over the gas, it mixes with the gas to slow the evaporation of the liquid part of gasoline.

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David - OR

01-12-2007 05:21:08

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Re: OT Fuel Stabilizer in reply to rgvtx, 01-12-2007 04:49:19

As I understand it, STA-BIL is mostly butylated hydroxytoluene (BHT). BHT acts as an antioxidant in fuel, just as it does in foods. BHT is soluble in gasoline, diesel, and ethanol. I don't believe that it will "float on the surface and form a film" in a gasoline tank. If it did that, that would defeat some of its purpose, as it would then not be able to reach the fuel pickup, and thence the carburetor and thereby protect the fuel in the float bowl.

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rgvtx

01-12-2007 05:25:38

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Re: OT Fuel Stabilizer in reply to David - OR, 01-12-2007 05:21:08

You very well may be correct, I always thought it mixed too but we had a vendor who sells the StaBil product in one day and that was the information he provided. Can't say I actually fully believed it though, all I know is I have used it for years and have always had success with it and have never had to rebuild any more carburetors even after sitting idle for several years. Thanks for the info!

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