I’ve used FTC in my wife’s Mitsubishi Colt and my Volvo XC60. In both cars there have been very marked improvements. The Colt’s economy increased by over 6mpg and the car is far quieter and smoother than it was before. The XC60 has improved economy of 5mpg and has much better acceleration and improved engine torque. This has made a big difference especially when we are towing the caravan. I’ve recommended FTC to my son in law Paul, who has bought two sets for his family cars. FTC has certainly worked really well and I’m very pleased indeed.