Roger Lee Posted March 5, 2012 Report Share Posted March 5, 2012 I have now seen a few of the yellow Tygon fuel site tubes that have more than a year in service with 91 octane. Not only have these hoses stained and made fuel hard to see, but they are so hard they may as well be solid plastic tubing. The owners told me it was even hard to see the fuel level before they became too dark. The only place they are soft is where the clamp was over them. This tubing doesn't seem to be any better than the clear polyvinyl tubing. Might as well stick with the original tubing since it cost around $2 for the tubing to replace both. When I did my original research all the companies I talked to said the dye in the 91 octane would eventually stain. I was surprised at how hard these Tygon tubes became. They don't seem to want to break even if I force them to bend. I believe the polyvinyl makes it easier to see all the time until they too need replacement. We need to get used to just changing the tubes approximately every 2 years. Link to comment Share on other sites More sharing options...
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