Hey everyone I've been lurking around the sight researching the rx8 and I gota say I'm super stoked to be getting one! but there's one thing I can't find in any of the threads (and before u tell me to use the search function. I have and nothing.) but one of the rx8's I'm looking at the guy tells me it has a darker grey smoke coming out the exaust and it gets worse the higher the rpms are. So my question is what dose darker grey smoke mean.

 

Black smoke indicates an oil leak. Not sure about dark grey, but I presume that's the case here?

 

No blue smoke is oil and it will smell like burning ruber. And black smoke is unburnt fuel (diesel trucks commonly)

 

And what is the difference between diesel fuel and gasoline? .... exactly.....

 

The major difference between diesel and gasoline is the way these explosions happen. In a gasoline engine, fuel is mixed with air, compressed by pistons and ignited by sparks from spark plugs. In a diesel engine, however, the air is compressed first, and then the fuel is injected. But that's beside the point..... Ime just looking to find if any one knows what dark grey smoke means