In answer to the original question
I realize this is my first ever post on the forum - always want to feel like a contributor before actually saying something. That said, I actually do have some feedback about this Hot Shot's Secret product being asked about.
Was actually planning to have my injectors rebuilt in the 2005 PD I've been driving. Have the money to do so, and it seemed about time to mess with them in this way (216,000 miles). Mileage has been dropping a bit, some visible smoke during accel, and an occasional engine code relating to misfiring on cyl #2 (mainly after a long trip).
I stumbled onto an Amazoff link (for the Diesel Extreme) lower on a page I was looking at for something else, and clicked on it. I read all the hype and hoopla they were touting about it, and figured I had little to lose by giving it a try. If it didn't work, I'd be no worse off than the times I've used PS DieselKleen.
I have 30oz left of the PS DieselKleen product, from an 80oz jug I bought a couple years ago. While it's actually in the tank, this product seems to smooth out the engine a bit, but as soon as the tank is finished the car goes back to the way it was prior to using it. The mileage has always remained unaffected whether it's been added or not - just a smoothness improvement.
So this HSS DE product arrives last Thursday, and I put in 6oz on my way to work Monday morning (2½ days ago). I'm not exaggerating when I say that within a half-mile of driving, there was a noticeable throttle difference, for the better. I was not expecting this at all. I know some of you are skeptical of such claims, but this is truly the first time in my 53 year old life that a product has impressed me so quickly. The performance is a LOT peppier, and when I look back during a hard acceleration there's no visible smoke (as I could always see before). I'm now set back in the seat a little firmer too.
As for proof of any of this - time will tell. What I can say is that I went down after work yesterday (Tuesday), and had my emissions checked (because it's due, and every 2 years the State requires it be done). I took it to the exact same outfit I took it to the previous time. Went through the check, and the guy commented on my low particulate number. After getting back home, I checked the number against my emission test from 2 years earlier. 2 years ago I scored a 1.3 (below 40 is passing) in the particulate department, this latest test has it as a 0.5 ! The car was running fairly well 2 years ago, and it's only been the last year that things have been declining or deteriorating slightly (why I wanted to do the injector rebuild).
The HSS company claims this product only needs to be used every 6000 miles. And since I've only been running it so short a time, I can't give any feedback as to if that seems true, the mileage gains or losses, or the effects to the injectors good or bad. What I can attest to is that it seems to work quite well, and I'm impressed with the results. My plan is to make a couple of updates to this as time goes by, and I gain more experience with it.
I've read this forum long enough to know there's gonna be some bashing and thrashing over this, and that's alright. I have nothing to gain or lose whether anyone else ever uses this product or not. I just wanted to go on here and give some first-hand feedback regarding a product which initially seems to do what it claims to do. If this all ends up happy and no negative, unforeseen issues, I'll save the injectors rebuild until I really do need it.
My car is faster after I wash it, as well!!
