hello i just upgrade from a loyal to a 91 legacy and had i question. its a 91 2.2 auto sedan and it has 151,000 miles on it. I got from it from an older lady that I dont think took good car of it. anyways i got the car and it drives forward just fine but didnt shift into reverse once it was warmed up. now i got the car and put 3 qts of oil in it and 2.5 quarts of atf to get it to show back up on the stick. anywho now the car goes into reverse from park 3/5 of the time and likes it better when i got from D to reverse...but sometimes it just acts like its in N but i give it a sec and a little gas and it clicks it. my question is is the tranny going out or can i save it with some additives like lucas or maybe a filter and fliud change....it shifts great 1-4 other wise in traffic or going 80 on the hwy....thanks for any help....

Don't drop the pan its not necessary, but do flush the transmission.

 

Some here like to drain and fill 3 tiimes with driving it for short intervals in between drain and fills.

 

I like to drain, then pull the radiator trans hose and put it into a empty gallon jug. Fill the transmission and then start the car. Pump about a half of gallon out, then shut off the car.

 

Fill the transmission again and repeat until you have clean fluid coming out. This usually takes 3 to 4 gallons of Trans fluid.

 

Good luck with it.