My 97SSEi used to get 30Mpg, now its down to 26Mpg. Dont know why, I've tuned it, serviced it and I treat it good. Still runs great, just gets 4Mpg less than it used to. Now I tend to drive faster now. I commute a lot of miles, and average high speeds on the highway. I guess if I slowed down to 60Mph I may get 4Mpg more. Who knows.
I generally use Marathon or Amoco Premium or Ultra. I avoid Swifty and Speedway gas like the plague.
I average 400Miles out of a tank, but I always try and fill up after 300 miles. A few mechanics have told me that GM fuel pumps have a bad habit of overheating if you let the tank run low all the time, and they burn out early. And some of you know how much a new pump costs for these cars. I changed one in my 92 SSE and cost me a lot. Now my cars never get below 1/4 tank.
And my gas gauge on both Bonnies suck. My 92 shows empty when I fill it, then after 50 miles starts to behave. My 97 Gas gauge shows between 3/4 and Full at all times, and is never consistent.
92 SSE - My shopping cart
97 SSEi - My speed machine
95 Z28 - My Speedier machine
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