22-08-2013, 05:28 PM
What additive were you using Piggy? I was sceptical it would do anything, but I've been using it 2 years now. Cold starts in winter are definitely improved, and I do think the car runs better. Indeed there are research papers that demonstrate the difference a cetane booster can make. The overwhelming opinion veggie forums is that it worth the money, and getting those guys to spend money on anything is very difficult! All in all it costs less than 1ppl anyway.