I use tow haul when I am towing my Jeep.I dont use it if I am not towing.My mechanic says you should always use it when towing or risk damaging your transmission.It tows fine when not in that mode but I am following his advice.I also understand that the v10 can handle the high rpms,but I havent had a problem with that because I drive like an old guy that I am!
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