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Exhaust Soot on All over Bumpers and More

I still get some, but not as bad as your pics.
I tried octanes from 87-93 and noticed no difference.
I use 89 octane ethanol free. Not because it is cleaner, but it goes farther on a gallon of gas.
I saw the amount of soot decrease a good bit after i hit 2k mi or so and switched to mobil 1 synthetic oil.

In summary, I don't think that it is a gas octane level issue, I believe it is an oil issue. Almost all GDI engines seem to have this to some degree. The rental Optima I have right now has sooty exhausts.

Just wait til you drive like grandma for a week or 2, then stomp the gas! My buddy was behind me and said my car looked like a diesel with all the black soot it blew out!
 
I wanted a white genesis, but I saw how sooty they became after a couple of weeks. I went with the Titanium, because it stays looking cleaner longer.

Plus it is the fastest color Rspec ;)
 
kf4zra said:
I wanted a white genesis, but I saw how sooty they became after a couple of weeks. I went with the Titanium, because it stays looking cleaner longer.

Plus it is the fastest color Rspec ;)
Click to expand...

That's right!
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I wonder if you coated it with some type of silicone or Teflon type spray would help make it easier to keep clean. Obviously would have to read the can to insure it wouldn't hurt the paint first. Just a thought.
 
^^^ +1 Teflon boat wax seems to help a bit.. Primary for washing it off easier.
 
Black genesis badges emblems letters lettering chrome delete
What brand Teflon do you use?
 
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The soot is not residue from gas. Changing gas will not change the soot problem. The soot is from oil that's burned when when PCV vapors get mixed into the intake stream. Look out the rear-view mirror the next time you really stand on it and you can see the soot being blown out.
 
I do not get much soot. And if caused by PCV or ring blow by. I guess that is why for the time being hardly any measurable amounts of oil between changes. I am not getting blow by.
 
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