Hello, I wanted to ask, what is it about, that since about 10-15 years especially old cars and motorcycles smell so penetrating when they come to meet me? On windless days the smell stinks even 1 km after the passing. I am already a little older, and I was previously unknown to this fuel-gathering. Is it currently in fashion to add the fuel additive? I notice, the higher the petrol prices are, the more old cars and motorcycles stink of this stuff. ine alternative to petrol, which costs less money? I would also be interested in whether it is toxic? Because if you have the smell in the car first, then you can not get it out so quickly, because as already mentioned, the whole road stinks 1-2 km far. If it is toxic, then I find it quite selfish to use such a stuff.