waterless coolant - running hot

[geoff]

my 2000 injection is running at about 225 farenheight. I have bled the system so many times now. It seems ok - the bottom hose is getting hot so I think there is no air pocket but it is running at 225 which I think is a bit high.
I am using Evans waterless coolant - do you think this could cause the engine to run a bit hot ?

[18Fiatsandcounting]

Yes, 225 is on the high side. I assume you're reading this from the temperature gauge in the car, and these can be off somewhat, but I doubt it would be wrong by 30 degrees or so. 190 oF is where most of these cars run.

I have no experience with Evans coolant, but if you do some Googling, it seems quite common for engines to run hotter with this coolant as compared to regular water and antifreeze. Very likely this is your issue.

-Bryan

[SteinOnkel]

That stuff is junk.

As with most of these things, ask yourself if there is any OEM that uses it. If the answer is no and you don't have a very specialized use case, you shouldn't buy it.

[samakijoe]

Get yourself an IR temp gun. Work all the time.

https://www.ebay.com/itm/NEW-Non-contac ... SwnIlepV08

[SteinOnkel]

Get yourself an IR temp gun. Work all the time.

https://www.ebay.com/itm/NEW-Non-contac ... SwnIlepV08

Those are woefully inaccurate in an automotive environment. Because of the emissivity, they are nearly useless reflective surfaces like aluminum, stainless steel etc.

https://www.thermoworks.com/emissivity-table

As an experiment, I used my IR to measure the exhaust gas temperature on each runner of the stainless steel headers. Knowing all cylinders were running at peak efficiency (vacuum between cylinders within 0.1 bar) and an idle mixture of a rock solid 14.7 air/fuel ratio, the temperatures measured on the header had a fluctuation of +/- 150C.

Don't rely on these. Get a surface probe, much more accurate.

[GeorgeT]

Thermostat not opening completely?

[rridge]

Water is the perfect coolant in the sense that a pound of pure water will carry away more heat that a pound of any other liquid, its so-called "specific heat content". It's limitations as a coolant are its boiling temp, its freezing point, and its corrosion potential. Other coolants trade off lower specific heat to get some other property. A properly cooled Twin Cam needs a small margin over sea level boiling point that a low pressure Italian cap provides, some of acid buffering, corrosion inhibitors and some freeze protection. That's it. I've never understood waterless coolant.

[geoff]

I started with the waterless coolant when I removed and looked at some of the aluminium components of the cooling system. They were in a well corroded state so after a good flushing of the system I decided to use the waterless to protect the system.
I don't accept that just because the OEM's don't use something then it cannot be any good. there are many reasons that OEM's often don't use the best available product - often it is cost but also factors like them wanting to safeguard their service revenue figure in there too.
I don't know if the guage on the dash is accurate or not. I will try to get an accurate measure on the temperature.
regards to all