The Spinner II oil-cleaning centrifuge is the only proven way to stop soot, safely extend lube oil drains and reduce oil related maintenace costs. Spinner II is a permanent, reusable bypass filtration unit for diesel engines, use it in addition to your full-flow oil filter to keep oil cleaner, make oil and filters last longer, and protect engines better. Spinner II 936 processes 1 gallon per minute (3.8 l/m) and holds up to 900 cc of contaminants.