I have pretty much read through the posts and it looks like most people believe it to be a gimmik of some sort, doesn't produce what it claims, etc.

I came upon a case of this stuff for free and was wondering if it would help at all or if it might actually do harm?

If you got it for free would you use it?

 

I wouldn't use it, even if it was free. Like you found out already, it's a gimmick.

BTW, I drive through Castle Rock all the time.

 

I may have to recruit you when I get my new 4" exhaust

I am leaning toward not using it at this point, so thanks!

 

My friend sells the stuff and uses it religiously in his gasser. He honestly swears by the stuff and I Know a few others that use it and love it. I haven't put it in my PSD yet and don't really plan to but my friend did see a mileage gain in his gasser. Just my .02 worth. I don't think it will hurt your truck and they claim it adds lubricity which you want with the ULSD fuel.

 

No problem. It's a pretty easy swap.

If you haven't found it yet, check out the Colorado Powerstroke Club website (Colorado Power Stroke Club). Quite a few of us "locals" get together for events throughout the year.