Improve Mileage of Jaguar XR 4.2l by 23%
Improvement of 23% Jaguar XR 4.2 liter 350 hp - mileage per tank increased from 600 to 738km! miles / gallon: 19.86 -> 24.43 I tried the BE-Fuelsaver LKW stick on my XR Jaguar 4.2 liter with 350 hp and I am very impressed. The car was immediately better, smoother, yet at the same time [...]