2005,4 cyl., no overdrive=-

high high miles = 240,000 . a friends car runs and drives perfect "except" it refuses to go into 4th gear. it will cruise the interstate,but only up to 3rd gear. the mpg,s are way down with all the rpm,s. someone said a shot of sea foam in the tranny will help.

thanks for any advice.

Only drive in City limits until fixed.