They used to put an air bleed valve on cars, but precious few now. This is an amazing tool to burp the system when filling:
http://www.amazon.com/Lisle-24680-Spill-...K498SSSNPZ1TZWT
I recently did a full coolant exchange on a car with the filler under the cowl which was difficult to pour into. Attaching the angled fittings on the funnel really helped.
http://www.amazon.com/Lisle-24680-Spill-...K498SSSNPZ1TZWT
I recently did a full coolant exchange on a car with the filler under the cowl which was difficult to pour into. Attaching the angled fittings on the funnel really helped.