Steps to revive a car

[klnaco]

I have a 1990 Taurus Wagon that has been sitting for nearly two years due to it having transission problems (wouldn't get out of first gear). The engine was replaced and only has ~ 40k miles on it, which is why I did not get rid of it immediately.

Recently, a dealership told me about the BG Flush procedure which has been relatively successful in correcting minor transmission problems at for ~$125.

For a vehicle that has been sitting so long, are there any key steps I need to consider toget this running? (BTW -I have been able to start it up. I let it run for a few minutes to allow the fluids to circulate and oil to spreadsome)

Also, has anyone had any luck with this procedure?

Thanks,

Ken