Having used FTC in our 73,000-mile Suzuki Grand Vitara, I’m writing to tell you I’m very glad we did. We have had the car from new so certainly know how it drives. Within a short space of time the car became quicker and more responsive, just like it was when it was new. After 400 miles there has been a marked improvement in fuel economy as well. What everyone says about FTC is absolutely spot on.