Also Cab Companies Use Trans X In All Their Cabs Because Of The Heavy Abuse On Their Transmissions. I Was Introduced To Trans X Back In 1999 By A Couple Of Guys Who Attended Car Auctions In A Lot Of States, They Would Bring Them Back Here To Nebraska, My Brother Bought A Ford Taurus From Them & They Told Him They Put Trans X In When They Purchased The Car & To Put Half The Bottle Of Trans X In When He Changed The Filter & Fluid On The Next Fluid Change. These Guys Have Been In Business For Many Years & Swear By It. I Still Use It On All My Vehicles & No Complaints Here. Start Using It Before The Slipping Occurs For Preventive Maintenance. Some Guys Are Saying You Are Not Supposed To Use Trans X In Some Of The Jeeps, Though I Do Not Know What The Reason Would Be For This, But I Would Talk To The Dealer Before Adding It In This Case. I Have Used It In Fords, GMCs, Chevys, Dodges, Foreign Cars, All With Good Results. (If The Transmission Was Not Slipping Already) Trans X May Buy You A Little Time, But The End Result If The Trans. Is Already Slipping & You Add It, It Will Eventually Need Replaced.