I check my coolant for trapped air before each trip. Those who do this regularly know the factory plug is a pain. I purchased a thumb-screw style air bleed valve and replaced the 1/8 NPT plug. The hose also keeps the coolant from dripping everywhere and making a mess. I put a quick video on YouTube to explain how it works. I know SpeedWerx makes an automatic bleeder and people have copied the concept. I just could not get past the fact I can't tell if there is air or not. Every hose connection is also one more place to leak.
YouTube Address:
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