The days of the internal combustion engine are numbered. That's not much of a surprise given the impending electrified takeover, but keeping our precious gas burning, manual shifting, turbocharged machines in proper working order is that much more important. The trouble is that the VB WRX's main nemesis is itself, or at least the by-product of its operation. Like every WRX before this one and fossil fuel-powered engine to hit the streets, blow-by and carbon build-up lurk in the vehicle's intake tract. Not to worry, though. We're already on the case to preserve the WRX's power plant.
If you're scratching your head at the notorious boogyman that is blow-by and how to prevent this monster from attacking your WRX, let's review. Any internal combustion engine operates by using thousands of tiny explosions to drive the piston to the bottom of the cylinder. This process turns the crankshaft, generating the power to propel you down the highway. The downside is that not all of the combustion