OOOh, Easy Start, https://www.halfords.com/motoring/e...additives/bradex-easy-start-300ml-793737.html a very mixed blessing? especially where diesels are concerned. Yes it will often start a reluctant one but, especially with older engines, as you probably know, they can become "addicted" and refuse to start without a "fix" from then on so you need to use it very sparingly.
they don't really get addicted what happens is the problem that prevents it starting gets worse and worse, giving the impression its addicted,
this seems to start them better and is cheaper, smells the same so no idea why https://www.halfords.com/motoring/e...-additives/holts-cold-start-400ml-130658.html