Thanks - I did the seafoam already. I let the intake suck in 1/2 and put the other 1/2 in the gas.

 

Is the "Check Engine" light on?

 

Negative. All runs smooth - just decreased milage...

 

About a year ago was when gas prices skyrocketted and they started adding ethanol to all grades of gas ..... is it possible that you noticed this MPG difference as a result of the alcohol? ethanol gets worse MPG than pure gas.

 

Yeah but that should have that much of a difference on his miles per tank. If I remembered correctly you get about 10% less from ethanol. They only put 10-15% ethanol in gas these days so thats 10-15% of 10% decrease which should be an under 2% decrease miles per tank of what he had before. So he should only see a drop of under 10miles per tank from before. But hey they could be diluting their gas for all I know.

 

The issue has been more recent - last 2 months or so. It was about a year ago when I made the previous round of changes to get me back on track. Thanks though....