I USE BREATHER CAPS IN MY OIL FILL HOLE EXCLUSIVLY WITH 0 PROBLEMS. ONLY THING IMO GOING DOWN A INTAKE MANIFOLD IS GAS AND AIR..... AND IF YOUR ENGINE BAY STINKS ITS BECAUSE YOU HAVE ALOT OF BLOW BY AND WILL NEED A O/H SOON.


I BELIEVE IN " JOHN 3:16 "