I have a 2002 Gmc Yukon and ever since they started putting ethanol in the gas my car has been running really crapppy!! I needed to replace my fuel pump twice. And my fuel filter 4 times in the past year and a half. The gage stopped working correctly and now I run out of gas at 1/4 tank. And when the gas gets low, it will only go 5 miles an hour, and then after i park it for a while and head over to the gas station it will run perfectly fine. The mechanic keeps saying I need a new fuel filter... but I never had to replace it that many times since the DAMN ETHANOL!! Any advice??