I don't think air in the system is the issue. Dealers don't mess around with bleeding funnels and wasting time idling the car until the thermostat opens. They use a special tool to vacuum fill the system leaving no air pockets, same as the factory.

https://www.uview.com/index.cfm?dsp=...productid=5120

No issues with heat after I did the flush/fill on my car using this tool. Refilling it took all of a few minutes.

More than likely the thermostat is stuck open.

:iagree:

the car would likely to run hot or even overheat with air in the system.

stuck open thermostat is likely the cause....

Hi OP,
I recently bled my green coolant and replaced with Blue. I followed an Infiniti G37 video a mechanic (made in his garage) and had no problems whatsoever. After all was said and done I filled my reservoir at the full line and it emptied a small amount into the system after the change. I did nothing special, just a normal drain and replace. There are two screws to remove on the radiator endbells to allow each side to push out the air. I bought new O-Rings for these plastic screws and no issues at all since.
Sorry to hear you're having issues, and I hope you get it sorted out quickly.

You would be surprised how few techs actually own vacuum bleeders. At Acura zero techs owned one. They are more common in domestic and euro but even then at my last dealer that was domestic (before I finally got out 2 years ago) out of somewhere between 35-42 techs depending on how many were quitting vs new hires only about 5 of us owned a vacuum filler. Most don’t even own a coolant system pressure test kit. Dealers today mostly hire at low wage at flat rate and those tools aren’t cheap. We had a corvette come back 3 times for overheating after a service because they didn’t use a vacuum filler and air got trapped in the crossover piping before it finally got sent over to us drivability guys to fix it.

Most techs are trying to get bye with the bare minimum. Can't afford most of the specialty tools. I been in that boat and it was sinking.

I hear you. I got the tool because a dealer drain/refill is at least $150+. It's paid for itself already after servicing two cars. Can't put a price tag on time/hassle saved by not having to deal with bleed screws or worry about car over heating. I suppose from a tech perspective, if customer is getting billed per hour then the funnel makes more sense.

No the vacuum filler makes the most sense because techs get paid flat rate so if they go over the time charges they are working for free, also if it comes back then it is getting looked at again for free. So doing it once and doing it right is very important for a tech (why I personally have one). It's just that techs do not make much money and that mixed with the large amount of warranty work (which pays even less time than you could believe) you're almost guaranteed to be working for free at least a few hours a day sometimes, on a big job your entire week may be a loss. Also a lot of cars now have included services which pay the tech a lot less time, it used to be you made your time back on that type of work to offset the warranty garbage but now that's gone and the warranty garbage is still there. Also that won't be the only tool the tech needs, they will have an open account with Mac, Snap on and Matco and have a decent amount of debt to them. As Rusty said most techs are just barely trying to get by and if they have been in it for a little while they are not looking to invest more in a field going nowhere and are looking to save as much and trying to get out.

When I was a tech (mechanic in my day) in the early '80's. We had a saying. I own my soul for $80.00 a week for life to the Snap-On guy.