PRyker said:
Cant I just dump some 2 cycle engine oil in my tank and accomplsih a similar thing? I think it would be chaeper!
I don't know whether that would work or not, but suspect it wouldn't (there are a lot of old, cheap diesel farmer and tractor pull guys who live around here, and if it worked I suspect they'd be doing it already, which they're not). But more importantly, good diesel additives attack a
bunch of problems simultaneously... increasing lubricity is only one. They also contain anti-gelling agents, detergents to clean your injectors, water emulsifiers or dispersants, and added cetane (helps to make up for the lower BTUs of winter diesel that typically has kero mixed in). 2-stroke oil would give you none of that. Several of the additive manufacturers claim that the added cetane boosts MPG, thus effectively making the product pay for itself. I don't know about that (I'm still collecting the data), but most of these additives aren't particularly expensive to begin with.
With regard to why a pump manufacturer would want to sell a product that would make his pumps last longer... well, I'm a businessman myself, and can only say that there are bad businessmen and good ones. A good one would recognize that if I buy his pump and it goes south in 40K miles, I sure won't be coming back to
him for a new one, or recommending it to my buddies, so building a crappy product is no way to capture my return business and free advertising. In contrast, selling me an additive that makes my pump work better and last longer... hey, now he's got a customer for life. Sometimes, you
can do well by doing good.