I have been running my own business for the last 35+ years building Hot Rods and specialising in Classic Muscle Cars. I have been telling my customers for many years to never fill the fuel tanks in their vehicles and leave them sitting in the garage unused for weeks without starting them to keep fresh fuel in the carby bowls. This caused many carby and tuning issues as soon as they switched from Leaded to Unleaded fuels. The best trick to protect everything is to add a small 10% mix of 2 Stroke oil with your fuel. This helps keeping rubber parts/seals lubricated as well as preventing damage and clogging of internal parts when the fuel goes bad. 👍🇭🇲
Gas now is a completely different formula than even 30 years ago, it evaporates from the bowl in 3 days. The anti boil and anti evaporate properties are gone, and with it the red varnish.
If i know my bike or lawn tractor is gonna sit for a while, i add 2-3 tablespoons of good quality 2 stroke oil to the gas. Mix it up in a gascan before you add to the fuel tank. I'll "keep" better and not foul jets or float/needle.
The gas or what ever it is now destroys the rubber in fuel systems. Take the filter off and blow it out. All that black gunk is rubber. If you have a Holley the power valve turns into a blobish mess. We have a place in town that sells real gas without the alcohol. It cost's more but well worth it.
Ethanol in gas is handout. It's for farmers and big chem to make an unsustainable fuel and profit from selling an inferior product. Ethanol is worse for the environment than regular gas, but Monsanto, DuPont, and all the other the right people are getting paid.
I thought about that but most tanks on quads and dirt bikes are plastic. I know it’s probably a different kind of plastic but I wanted to keep it close to the condition of being in an off road machine but I’ll do glass next time. I agree glass is better to store stuff in. Thank you for the comment