What are the cc of you injectors? 333cc sounds odd. 310cc maybe?

if you have fuel mixing with your oil it could be a sign of cylinder wash (extreem cases) or you may have an injector that's sticking open......that would cause your oil to be thin, smell like fuel and puff out while/black smoke. My buddy's car had that happen once, plumes of smoke were coming out (though he blew his engine) and his oil smelled like fuel,
generally
white smoke is coolant
black is unburned fuel
blue is oil, but there are exceptions to every rule.
His care made white clouds of smoke and it turned out to ne fuel related.