The Volvo PCV system is one of the most neglected maintenance items on the I5 cars. Failing to maintain this system can cause major oil leaks. I blew one of my cam seals one evening and lost 2-1/2 quarts of oil in just 2 miles. If you do not know when it was serviced last, replace the system today.

This video will show you how to test the system on the Volvo 850, S70, V70 and other Volvo cars.