wintersun wrote:
Cetane ratings for diesel is much higher in Europe and I would consider an additive for a car imported into the states. The US manufacturers know about the fuel available in this country and engineer their engines accordingly.
The newer the truck, as in post 2010 the less I would worry about additives. Not that the additive companies are above using scare tactics to sell more product.
Totally agree. Our 7.3 powerstroke showed no difference with and without Cetane. Our little smart car diesels run much quieter and smoother with the cetane additive. Our cummins 8.3 also runs no different although I only tried it once.