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does techron increases fuel economy?? i switched fuel brands this week and i'm seeing a significant drop in fe (6-8 mpgs).:mad::Banane45:

The concentration of additives in the fuel is very low - even if the additive was completely inert it should make that big a difference. It could be your recent driving conditions are to blame. Try running a few more tanks for more data.

Is that the Corkscrew @ Laguna Seca in your profile picture?

The concentration of additives in the fuel is very low - even if the additive was completely inert it should make that big a difference. It could be your recent driving conditions are to blame. Try running a few more tanks for more data.

Is that the Corkscrew @ Laguna Seca in your profile picture?

well the air temp dropped 10 deg farenheit also... and yes it is the corkscrew at LS...

Temperatures can kill you, and if you drive short distances they can kill you and then dance a jig on your empty gas tank. Just one of those little arrows we all have to dodge, unfortunately.

Or you got a tank of bad gas. Just fight the good fight and see what happens.

If you test new brands of gas, make sure you test at least 30-50 consecutive gallons on each brand before switching (about 5 months supply for me). I found that fuel trim tables wiggle a lot whenever I change brands. Any wiggle in my trim tables kill my FE, especially on my MMH.

My suggestion, Pick a Brand, A Station, and a Pump at that station. Always fill at the same pump and if possible at the same time on the same day of the week. I think this will help more than anything.

Keep in mind, they are about to switch to summer gas, so you'll get hit with that where ever you go.

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