Review on Mityvac MITMVA670 Power Steering Adapter by Nick Andep

I've had problems with air in the system on an Impala 08. I've used this and the air was effectively removed. Simply install the appropriate cap on your vehicle's pump. Apply a vacuum and the vacuum will hold the lid. I applied 25 inches of vacuum and listened with a scope and I could hear the bubbles. I kept applying the vacuum until it stabilized at 25. The key is to keep the vacuum constant and give it time. If the vacuum drops, it's because it's removing air. Went like clockwork.