I have a 2000 Ford F150. I recently changed my transmission fluid and installed a high preformance shift kit. I replaced the fluid with the Lucas Semi Synthetic ATF and Lucas Tranmission fix because I know thats what Lucas bases thier products around... Performance! Man what difference in shifting. Its shifts fast and very crisp. I am very pleased with this product and do recomend it to others. I have used Lucas oil products for years, and i trust thier products. Thanks for making such great products!