I have been having a heck of a time burping my cooling system. I've been on hills, mountains, curbs, driveways, everything trying to get it right.
New
Thermostat (dealer)
T housing
Water pump
Hoses

Symptoms
When it warms up for 1st time, temp goes to 215ish then back to 180ish. On highways, stays consistent at 195-205. Stop and go traffic, runs at around 215.
Heat is good only during first 10 seconds heater is on, then back to cold.

I suspect air still in the system. I have come up with an idea of installing a T on one of the heater hoses, attaching a small peice of hose to that T, with an on/off valve at the end.
In my mind, I could bleed the air out, while also adding coolant that way.

I just want to poll this site before I do it and see what you all think. Do you think it will work?

That was something I seriously considered doing as well, to improve heater performance. I just haven't gotten to it yet....... I was just going to put a flush t in the heater return line, right by the heater core. (highest point....) Run the engine with the radiator cap off, and just crack the cap open, till air quit coming out.... It *should* work perfectly......

Would it be better to put it on the return hose? The inlet hose seems easier to get to...

You want to be able to force the air out of the heater core, so, return line is where it needs to be.......

That makes good sense.

I am going to tackle it this weekend and I will report back the results. Thanks!

Definitely let us know how it works. Heater problems are all to common here.

I put one on each. (Maybe I simply have too much time on my hands)

Right now I plan to do it on the return hose. Can you explain what you used?

A flush T?
A 3 way T with a on/off valve?

I just want to see what's easiest and best. Thanks.

A flush tee, the kind with the garden hose cap on it.

Did it work?