I can't remember who asked me, but a forum member asked what brand thermostat I had when I told him it had a bleeder valve. So I found out what brand it was Duralast Gold. Here is my thermostat and the picture from the website (I use the app).

 

There should be a sticky about this, I mentioned it before. Seems someone every other week posts about air in the cooling system that they cant get out.

 

Sorry Mopar my brain is young but forgetful as in trying to get the property back in shape (one guy taking care of 100s of acres is stressful lol). I didn't forget you just had to wait until I got my thermostat changed

 

Well.....that's a jiggle valve, not a bleed valve. Bleed valves are on the block. You'll get better heat and fuel mileage with a 195 degree thermostat. Right now, your engine is in open loop mode to warm up.

 

My mistake on the terminology and it does allow air to pass the thermostat.

 

Don't worry about it. I still drill a 1/64 hole if there isn't one already. It prevents air lock.

 

​​​​​​ Absolutely! I drill a 1/8th hole

 

In the late 1930's, Plymouth cars started overheating. Chrysler had changed suppliers and the NEW thermostats were built to close specifications. The old ones leaked. The new ones didn't and air would build up and create an air block. When I finally opened, water was slamming into hot metal and gushing enough to blow radiator caps off.

 

Dang lol

 

​​​​​​ Also I did upgrade to a 195 as my truck was complaining about the 180 plus the heat wasn't that great. I was just showing the old one because I put the new one in with no pictures but confirmed it had the jiggle valve