Antique

My Feedback: (4)

Don't know what the black tubing I get is made of, they call it molded neoprene, but it works...I use it in my fuel tank on my test stand...It's in the fuel 24/7..Can't remember when it was last replaced.....Maybe Walbro knows what the carb diaphragms are made of, they're black and stay flexible a long time....

airega1

My Feedback: (204)

If you take a piece of the neoprene that's used for your automobile windshield washer and stick it is gasoline, watch what happens.

Antique

My Feedback: (4)

The tubing used for the washer is the cheapest material they can find and is not sold for gas line, the other stuff is..It may be Buna-N ( Nitrile,) I have no idea nor am I a chemist...They wouldn't have been selling it for this long if it didn't work..I started using it at least 20 years ago, when it was sold by Hayes Products as molded neporene... I would NOT recommend a product that I have not personally use...I have not tried the other stuff, but Tygon is definitely not as good..Maybe the other product is, I have no reason to try it when the molded product works so well.....

airega1

My Feedback: (204)

I agree, if it's working for all this time, it must be good. I spoke to the technician at B&B rubber here in VA Beach and he said that Tygon was never made for use with gasoline, but people use it and it works, as long as you replace it often.

Josey Wales

My Feedback: (61)

What about this stuff??

http://www.ronlund.com/Merchant2/mer...ct_Code=HAY249

Antique

My Feedback: (4)

Same stuff...they don't make any $$ on it either..

Josey Wales

My Feedback: (61)

cadconversions

My Feedback: (21)

Interesting discussion. I've already purchased some Typgon but also p/u'd some neoprene (black stuff that Tower sold) becuase I read that Tygon melts if it touches any parts of the motor / muffler. Might go down to the local chain saw / small engine shop in town and see what he has.

airega1

My Feedback: (204)

I believe any tubing that touches a gas engine muffler is going to melt. Just stick with Aerotrend easyflex and you'll never br disappointed

ptgarcia

My Feedback: (36)

Sometimes Tygon and Aerotrend are not an option: I have started using Hayes tanks. The 16 oz. slimline is perfect for tight locations, at least for me on two different planes. The problem is the tank opening is so small you can only get a small clunk in there, and standard Tygon and Aerotrend lines are two fat to fit thru once they are attached to the stopper. The only thing that works is neoprene. I'm in the process of installing a Hayes/neoprene setup into my Laser with Brison 3.2.

AJF--2

My Feedback: (119)

As for the additive in gas, here is what I have been told (I haul gasoline and had to go through the classroom courses for BP/Citgo/Exxon and a few lesser known companies such as Marathon and others)

When lead was dropped from gas in the 70's and cars went to fuel injection systems, they had to start adding things to keep the fuel systems clean for the injectors. ALL GAS COMES FROM THE SAME PLACE!!!!! TRUST ME ON THIS ONE!!!!! From the Exxon terminal, I load Shell, Chevron, Taxaco, Mobil and a few others. The name brand is determined by a code I punch into a computer keypad and I will tell you that Mobil/Exxon/Shell/Texaco all take the same code. Take that for what it is worth when people want to argue about wheather Texaco is better than Shell or Exxon.

The difference between Shell/Exxon/Citgo/etc.... is the additives that are mixed with generic gasoline when I load it on the trailer. The federal government requires a minimum of "cleaning agents" in the fuel to keep the fuel system clean and functioning. This is what gives it the Exxon stamp or else the Shell stamp or the Chevron stamp and on and on. When these additive blenders go down it shuts down the terminal.

During the summer (May 9th till Oct 9th) when I carry a load to certain metropolitan counties you HAVE TO load what is called 7.8 gas All other months we carry 9.8 gas. This lighter gas is "oxegenated" to burn cleaner in the more populated areas.

I hope I have succeded in confusing you folks a lot more.

BOTTOM LINE: If you want fewer additives then buy cheap "unbranded" gas. Now, do not confuse these additives with Gas that is mixed with 10% methanol -- that is a different story.[8D] It's a government "thing"