What is the best oil to fight fuel dilution?

[blackdiamond]

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When I pull the dipstick there is a slight fuel smell

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That's typical of all gasoline burning engines. You can have a dipstick smell like fuel and yet have a UOA showing .01% fuel dilution. There's really very little fuel in the oil typically; it's just that gasoline is so extremely volatile, a tiny amount smells like a lot.

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It seems to be a Mazda thing, I'm still looking for an opportunity to pull the dip stick on another Mazdaspeed3 and see how it compares.

The smell on the dipstick far is the only time I have ever noticed it on any auto. The cars run rich from the factory and it appears that the DISI compounds the fuel dilution.

 

[mcrn]

My trucks oil smells like that within 30 miles of driving but does not seem to become worse over the OCI. I am a little concerned about it and I plan on doing a analysis when I dump this oil.