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Message: <blockquote data-quote="whatsnexttogo" data-source="post: 1535183" data-attributes="member: 30815">I will give the following a try and see if burbing it helps:The coolant procedure varies a little from the Factory Ford manual which states for a 1996 3.8 V6:Cooling System, Draining, Filling and Bleeding3.8L EngineWARNING: NEVER REMOVE THE PRESSURE RELIEF CAP/RADIATOR CAP UNDER ANY CONDITIONS WHILE THE ENGINE IS OPERATING. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE COOLING SYSTEM OR ENGINE AND/OR PERSONAL INJURY. TO AVOID HAVING SCALDING HOT COOLANT OR STEAM BLOW OUT OF THE COOLANT SYSTEM, USE EXTREME CARE WHEN REMOVING THE PRESSURE RELIEF CAP FROM A HOT DEGAS BOTTLE OR THE RADIATOR. WAIT UNTIL THE ENGINE HAS COOLED, THEN WRAP A THICK CLOTH AROUND THE PRESSURE RELIEF CAP AND TURN IT SLOWLY ONE TURN THE RADIATOR CAP (COUNTERCLOCKWISE) SLOWLY TO THE FIRST PRESSURE STOP. STEP BACK WHILE THE PRESSURE IS RELEASED FROM THE COOLING SYSTEM. WHEN CERTAIN ALL THE PRESSURE RELIEF CAP/RADIATOR CAP (STILL WITH A CLOTH).CAUTION: The coolant must be recovered in a suitable, clean container for reuse. If the coolant is contaminated it must be recycled or disposed or correctly.NOTE: About 80% of coolant capacity can be recovered with the engine in the vehicle. Dirty, rusty or contaminated coolant should be drained and filled with new coolant.<ol> <li data-xf-list-type="ol">Release the pressure in the cooling system by slowly turning the pressure relief cap one half turn counterclockwise or the radiator cap counterclockwise to the first stop. When the pressure is released, remove the pressure relief cap/radiator cap.</li> <li data-xf-list-type="ol">Place a suitable container below the radiator draincock (8115). If equipped disconnect the coolant return hose at the fluid cooler. Drain the engine coolant.<ol> <li data-xf-list-type="ol">Close the radiator draincock.</li> </ol></li> <li data-xf-list-type="ol">Remove the cylinder drain plug, if equipped, to drain the coolant from the cylinder block.<ol> <li data-xf-list-type="ol">Install and tighten the drain plug.</li> </ol></li> <li data-xf-list-type="ol">Place the heater temperature selector in the maximum heat position.</li> <li data-xf-list-type="ol">Leave the pressure relief cap off and run the engine until it reaches normal operating temperature. CAUTION: On 3.8L engines, the vent plug must be removed before radiator fill or the engine may not fill completely. NOTE: Install the vent plug and tighten to 12Nm (9lb-ft) after filling the radiator and before starting the engine. NOTE: It is important to maintain engine coolant concentrate between 40 percent of -24°C (-11° and 60% or -52°C (-62°F). Fill the engine cooling system with 50/50 mixture of water and engine coolant E2FZ-19549-AA (in Oregon F5FZ-19549-CC. in Canada CXC-10) meeting Ford Specifications ESE-M97B44-A.</li> <li data-xf-list-type="ol">Stop the engine and add the correct engine coolant mixture to degas bottle/coolant expansion tank until the coolant level is between the COOLANT FILL LEVEL marks.</li> <li data-xf-list-type="ol">Turn the engine off and allow the cooling system to cool. Check the level in the degas bottle/coolant expansion tank, and add a 50/50 mix as needed.</li> <li data-xf-list-type="ol">Select the maximum heater temperature and blower motor speed settings. Position the control to discharge air at A/C vents in instrument panel (04320).</li> <li data-xf-list-type="ol">Start the engine and allow to idle. While engine is idling, feel for hot air at A/C vents.</li> <li data-xf-list-type="ol">CAUTION: If the air discharge remains cool and the engine coolant temperature gauge does not move, the engine coolant level is low and must be filled. Stop the engine, allow the engine to cool and fill cooling system. Start the engine and allow to idle until normal operating temperature is reached. Hot air should discharge from A/C vents. The engine coolant temperature gauge should maintain a stabilized reading in the middle of the NORMAL range. The upper radiator hose (8260) should feel hot to the touch.</li> <li data-xf-list-type="ol">Shut the engine off and allow the engine to cool.</li> <li data-xf-list-type="ol">Check the engine for coolant leaks.</li> <li data-xf-list-type="ol">Check the engine coolant level in the degas bottle/degas expansion tank and fill as necessary</li> </ol></blockquote>