wagonman76 -
Welcome to EM! I think your Celebrity is the first one here. I went to go look at your car on the EPA website :
1989 Chevrolet Celebrity / Automatic 4-spd / 6 Cylinders / 2.8 Liters / Regular Gasoline
http://www.fueleconomy.gov/feg/calcu...lumn=1&id=5681
Quote:
OLD EPA : 18/26 => 21 Combined
NEW EPA : 20/29 => 23 Combined
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Based on the above, you're establishing an excellent baseline.
I did notice that a manual tranny was an option for this car, but that's a lot of work, and I'll bet they're hard to find unless they were shared across a lot of GM platforms.
CarloSW2