I learned the hard way...
Years ago, I used a cheap "no-named" brand of gas because it was inexpensive and close to where I worked.
Then one day I noticed my wife's fuel gauge needle not reaching up to the "FULL" mark after filling it. Over time, it was getting worse until it didn't even pass the "1/2" full mark. I took it in to get serviced and a few hours later the service manager called and asked for me to stop by.
When I arrived he showed me the fuel sending unit on his desk and it was completely covered in a thick, caked, pink chalky substance! He said the whole inside of the fuel tank was covered in this stuff. He explained that the pink was probably a color of the dye fuel companies use to distinguish between the different grades of gasoline. But whatever the additive that was used left a heavy residual chalky substance that over time would add layer after layer on anything inside the fuel tank. He showed me the fuel float and the stuff had coated the float with so many layers of the stuff it weighed it down. It was hard as a rock and couldn't be scrapped-off. I had to get a new fuel tank and all its innards (not to mention fuel lines and a clean carburetor).
He was the one who told me about "Top Tier" fuel and said that was the only type of fuel he would put in his car. There was a Chevron close by where we lived and from then on that was the only fuel I would put in our cars. I've never had that problem happen again. So I'm sold on Top Tier gasoline! :banana:
Top Tier Gasoline
