Review on Spectre Performance Push Breather Tube by John Banks

This "breathable" material doesn't breathe at all. When I started the engine and drove off, the valve cover gasket blew. Fixed it, drove it around, and the valley seal burst. It was found that the pressure in the crankcase increased, which led to the failure of the seals. Don't even think about ordering this junk. It is very difficult to let air through.