This book tells you why and how.This book brings together a collection of popular articles previously published by the author in assorted car magazines. Based on in-depth research carried out at Manchester University, the articles investigate how classic engines respond to modern petrol/gasoline, and the results are presented in a way that any enthusiast can understand.One chapter ranks some brands and grades of modern petrol/gasoline, helping you choose the best type for your vehicle, while other chapters present the findings that debunk some of the myths about petrol/gasoline and engines. Real data is provided to help you tune your classic vehicle, ensuring that it runs as it should, allowing you to experience the pleasure of driving your classic car instead of worrying about it breaking down.The appendix gives a down-to-earth description of how to rebuild and tune SU and similar carburettors.Paul Ireland's years of experience and no-nonsense scientific approach will help you get the best from your classic car.