Quote:
Originally Posted by Father Of Giants
Because of the crappy fuel in my area, at WOT, it is capable of producing some black smoke. With 50 cetane fuel it doesn't smoke, if it does it's an extremely thin non-soot haze.
Also, those snakeoil cetane boosters do not stop my car from rolling coal. And this is considering the fact I dump an entire bottle of additive into an empty tank before filling up.
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Your car is also having some operational issues due to low compression. It isn't really fair to blame the fuel for problems until you correct said issues and know 100% it isn't something mechanical on the engine.
Our average cetane rating here is 42. You can get better fuel if you visit one of the truck stops or go further towards San Antonio, but out here we get whatever's left. Other than getting clattery with a lousy fillup, mine doesn't roll coal or smoke now that the IP's been tuned properly (IP came from a 3.5L).
For what it's worth, I've never had any of the "bottle fixes" cure anything for me either. I run straight diesel. If I get a lousy batch, I'll throw in some 2-stroke oil, but that about it. I'm still bleeding down a stash of marine oil from the 90s, when I run out of that I probably won't bother replacing it either.