Hi
I bought an aftermarket OEM equivalent thermostat ie 195 deg F that came with a small hole to release trapped air in cooling system and installed it worked very well.
I have since replaced it with an OEM and did not keep the old one.
I am considering drilling a 1/16 inch hole (0.8mm) diameter in the flange area and checking if this is sufficient.
Some sites mention 1/8 inch (3.2mm) dia hole and I feel this is TOO large.
The hole is to allow air to be released and allow a tiny amount of coolant to flow throogh not to shock the cooling system.
At the same time with minimal impact on the warm-up time required to get to operating temperature.
I understand not to mess with the cooling system and proper bleeding can release air during filling.
Thermostat 195 deg F. for Holden Commodore V6 3800 ie Buick L36 similar.
There are no system cooling issues just want to go back to the previous arrangement.
Comments welcome.
I bought an aftermarket OEM equivalent thermostat ie 195 deg F that came with a small hole to release trapped air in cooling system and installed it worked very well.
I have since replaced it with an OEM and did not keep the old one.
I am considering drilling a 1/16 inch hole (0.8mm) diameter in the flange area and checking if this is sufficient.
Some sites mention 1/8 inch (3.2mm) dia hole and I feel this is TOO large.
The hole is to allow air to be released and allow a tiny amount of coolant to flow throogh not to shock the cooling system.
At the same time with minimal impact on the warm-up time required to get to operating temperature.
I understand not to mess with the cooling system and proper bleeding can release air during filling.
Thermostat 195 deg F. for Holden Commodore V6 3800 ie Buick L36 similar.
There are no system cooling issues just want to go back to the previous arrangement.
Comments welcome.
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