Ahoi, what kind of fuel do you need?? Normal? Super? Super Plus? And what kind of engines? I have 137hp 1.8 liters of DOHC V-Tec in my Accord and always refuels Super.. just filled up a filling Super Plus before – hardly any difference to notice.And what do such additives bring?? Are these oil and gasoline additives not only increasing the wear and tear? Or do they really bring in power/cleanness in the engine/quiet idleness?