With this New Blade Cleaning System, your blade is lubricted and cleaned before entering the wood. It's then cleaned again after leaving the wood. This has a couple of benefits you'll need.
1) Because the felt will soak up and hold the lubricant, you only have to keep a intermittent drip on the felt instead of running a continuous stream directly against the blade. This saves you money on specialty lubricants like diesel fuel.
2) The felt is heavy duty and will keep pitch from building up on your blade this will keep your cutting system at full efficiency.