Well between taking care of grandkids I installed the separator. Running the engine between 20 and 25 minutes left nothing inside the canister. So at this point I suspect different things. One…the separator needs more airflow (than 18 inches of vacuum) to work. Two…my engine doesn’t put out enough blow-by. Doubtful but possible I suppose. My engine was rebuilt using the least possible factory settings and hot with carb open produces compression of 145 to 150 psi per cylinder. Three it needs more time to reveal results. I’ll keep an eye on it and see.