It isn't "just fuel", as you might say. A diesel will run on unleaded for a short time, but that doesn't mean we should put it in our engines....obviously. Nobody knows of the longevity effect yet. It seems to work well now for some, but not for everyone. I have been saying that it's a big risk with a 10k-12k dollar engine when no one yet knows what the results are for the long haul. If you have the $ to take the risk, then go ahead, but what is the benefit, really? On the Biodiesel.org site, it says" May have little impact on performance and longevity of your engine". They do not say what the "impact" may be, but why take the risk? Personally, I ran it through 3 tanks, got less mpg, and my truck ran weird. (Idling high, running hotter, not as much HP, and generally just did not do well). Hope this helps and it is only my experience......If it's better lubricity that you are looking for, use Stanadyne or Power Services Diesel Kleen for the time being until you know for sure that Biodiesel is the way to go.......:drinkI don't think there will be any problems either. It's just that "great unknown" factor of what could happen. Even then, what could hapen? I have no idea why it would hurt anything at all, its just fuel and it lubricates better, isn't that a bonus?