Really? I always thought it was pretty good stuff, though it smells like hell if you spill any on ya! Good reviews and even a big article on it in Diesel Power magazine a while back, though I've been using it long before that came out.

Do you have any recommendations on a commercially available additive? I'm just not brave enough to try the heavy oils. I've read of several people on other forums having major issues and know one guy personally who blew the seals out of his CP3 just 500 miles after adding ATF to his fuel, though I don't know what concentration he used.

Bio is best, Opti-lube next. I've heard Shaeffers Diesel treat is good. I have an irrational fear of Bio. I believe the commercial fuel treats are way overpriced. Anything that lubes the fuel system can't be bad, all you are doing is burning it. The treat rate I run is quadruple what most recommend for 2-stroke, but my Cat is no longer installed. I also run W/M for among other things, the side benefit of combustion chamber cleaning.

Lots of things to consider, pick your poison.

I'm surprised how many say Shaeffers Diesel is good and that Power Service is not becasue it uses petroleum distillate. But if you look at the MSDS for Shaeffers you will find out they to also use petroleum distillate just like Power Service. How is it Shaeffers can use petroleum distillate and be good but when Power Service uses petroleum distillate its bad?

Almost without exception, they all use petroleum distillates. Whether or not they put anything else in to give it any decent lube propertires is anyone's guess. The fact that they start with what amount to refinery waste in the first place is why I say they are overpriced crap to begin with, regardless.

JMHO. I'm sure there's plenty of Amsoil, Chevron and Schaeffer's peddlers out there who will disagree. Whatever.

Here's a link...Opti-Lube Advanced Lubricants... to the additive that tested best for lubricity in what's called a "reciprocating rig". I've used it in my '09 Duramax since I purchased it back in October. Can't say what it's doing for me really because I have no benchmark (Since I've always used it in this truck). However, I'm getting fifteen and a half miles per gallon in mixed driving, and strictly highway mileage is twenty two. That's not bad for pushing around an almost seven thousand pound vehicle, and perhaps the additive has something to do with that.

A big test done a while back by TDR showed that 2% biodiesel was the best followed by a few ounces of two stroke oil and then all of the other expensive additives.

I love my howes in my 97 12v has never let me down and #2 and howes started in -44*F only plugged in for like 30min

I have been using 2 cycle oil for the past 4 years 60/1 ratio. I like the results, quieter, the exhaust smells like a diesel......:tu: .Can't say it does any good but then again, I can't say that the vitamin pill I take every day helps either. Time will tell I guess. I use Howes when I go north in the winter, never let me down even when I forgot to plug her in one night @ 14 degrees. Took a little longer to start, but it did.