Sometimes with car in Drive, feels like low gear. feels like dragging. on 1995 Dodge Stratus

This start happening after I had my oil changed. I also noticed a decrease in mileage.

by in Babb, MT on March 19, 2013
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2 answers
ANSWER by , March 19, 2013
change spark plugs and ignition cables or coils to performance grade(E3 plugs and accel coils or cables). change air filter to high air flow design(K&N). use fuel additive(stab-ethanol treatment) to clean fuel system periodically(third tank). this may cost a lot initially but with fuel prices these days will pay off in long run.
ANSWER by , March 19, 2013
Might be good to have the trans scanned at a shop.