Yep…the brake booster is a MAJOR vacuum line…be CAREFUL pouring that stuff into that line… That line pulls MAJOR vacuum…did I say that already? LOL… But yeah go slow bec you don’t want to start looking up nor asking us what Hydro-lock is and what it can do. PLEASE go slow or use a reducer of some sort to prevent you from sucking up a TON of liquid at one time.
Blackbird