Re: Trans jerking at 40mph?
You can also do a flush & fill with synthetic transmission fluid. It flows better in all weather. I run Amsoil ATF in my '99 Taurus and it shifts like its brand new. Installed it at 65 000miles. Amsoil is Mercon V compatible and is warranted for 50 000miles of severe service.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!