i decided to empty my oil catch can today after having installed for 3-4 weeks, it solved most of my smoking turbo oil sealing prob that along with 0-40 oil. so i pulled out can out and wanted to see if it was oil/water or what was it in it. i poured some in a bowl and found it to smell like gas so i lit it on fire and sure enough it light up not 100% gas its mixed in with water and just a few drops of oil here and there. long story short how the heck is a gas like substance getting in my oil catch can i searched but did not find much info

the car is street ported 10k mile rebuild with stock turbo FMIC oil catch can is setup like so: vac line from lower and upper oil filler neck plumbed to bottle and third vac line plumbed back into intake pipe before the turbo inlet

 

it's called blowby.

 

ic... its normal i take it? or should i be using just a tad thicker oil?