Quote:
Originally Posted by jr_ss
Oil has a higher ignition point than gasoline, just like diesel oil, yes, but that doesn't mean it's a higher octane rating. Diesel is rated in cetane and has a considerably lower octane(8-15) rating than what gasoline has. Gasoline can be rated in cetane rating but there really is no over lap for the two. Oil is crude compared to the refined gasoline and even deisel fuel. Like I said, go read a book and get back to me.
|
Cetane is how fast it burns when it does knock, I believe (though I'm fuzzier on that).
I don't know that it's "octane" in motor oil, but nevertheless, it's AKI is going to be high compared to gasoline, you don't need a physics degree to see this.
Motor oil is highly refined, being thicker does not make it "crude", crude oil is something else entirely. Synthetics are considerably more pure than gasoline, which on it's own has a low AKI, and has all sorts of stuff added to it, partly because of lazy refining (even more so, now that they can add so much ethanol most places. The gas they start with is total crap, and not refined right anymore, unless you're filling up at the airport.)
It does have additives, but they are anti friction/wear, none of them should particularly hurt your motor, unless you burn a large amount of it. And it's surely much less chemically harsh than gasoline.
I'm not saying it's good to burn oil, I'm just saying that motor oil is not going to be more prone to detonation than gasoline. And hey, maybe I'm totally wrong.... but how about you have a source for that, instead of vaguely telling me to read a book? I'm telling you my logic, you don't seem to have any source or explanation.