Sv: Tesla i norske medier

[BauDemo]

I did some work on the heating system of one Think City and I noticed that the coolant used had a greenish, brownish color.
I know from other Think City cars that the coolant should be blue...
So is there a way to test if the coolant is actually of the green type or it is a blue coolant with lots of rust in it?

What is the difference between the green and the blue one? I know they should not be mixed, but what if they were mixed?

Should I evacuate the cooling system and refill with new blue coolant?

[Warlock]

The coolant on newer think has a yellow/Orange color (with a greenish tint?) Its som sort of longlife coolant which also is better against aluminum than the blue (which can do damage to aluminum and should preferably be used only on ironcast engine blocks).

There are several different colors of coolant fluid (green, yellow, red, blue etc), and not all can mix. the liquid could coagulate and could clog up. Unfortunately you can not depend entirely on the colorcode of your liquid either (its yust a aditative to distinguish diferent chemistry, but someone messed up the codes), so you should do a test-mix to be entirely sure...

You can however buy a coolant that is mixable with all diferent types. I bought some at MECA last summer, think it was this one:
http://catalog.meca.no/ProductSheet.aspx?Article_ID=2343647&CarReference_ID=-1&CategoryType_ID=0

[BauDemo]

The coolant on newer think has a yellow/Orange color (with a greenish tint?) Its som sort of longlife coolant which also is better against aluminum than the blue (which can do damage to aluminum and should preferably be used only on ironcast engine blocks).

Is this your personal opinion or do you have source for it?

From the manual - "Motor coolant – checking and refilling", page 5-9:

"THINK City comes from the factory with a 50% blue coolant from
Statoil. Refill with the same brand."

Edit:
And on one more place "6. Specifications and technical data", page 6-10:

"Coolant, motor/heater: 4,2 litre Blue coolant"

Edit 2:
And on another publication:

"THINK City comes from the factory with prediluted All Vehicle
50/50 antifreeze/coolant from Prime"

http://www.prestone.com/products/antifreeze_coolant/product_list?select_region=1
Prestone® DEX-COOL® Extended Life

Isn't that typical!

[Warlock]

The info on why the different colors and corrosion effects of some types are from the manufacturers themselves. It might of course be a sales gimmick that the blue one are more aggressive towards aluminum, yet its known that especially older cooling liquids are, in addition to loosing their cooling efficiency,  aggressive towards the system, and should be changed...

The color oft the coolant on "newer thinks" is just by self-inspection. I guess they changed the type around 2010-2011 at some point (maybe the move Norway -> Finland?). This is of course just a guess...

[wernerc]

Thanks for the answer on my other thread.
As it seems to duplicate I answer here.

The problem with modern liquids is that some of them contain silica and other don't.
And these ones semm not to be compatible.
Normally this is announced by the colour of the liquid, but some car manufacturers disregarded the colour code and we can't be sure that even liquids with same colour match.

This might not be as problematic when the whole liquid is changed due to a repair or whatever, but might be problematic when mixed.

As I just read, Statoil liquid is blue-green and nothing is mentioned of silica in it (but also no hint that it does not contain it).

I read that the G12+ coolant should be mixable with all others liquids without problems.

I only want to insert a heater valve for air bleeding.
Hopefully I don't loose too much liquid.

Best regards
 
 

[BauDemo]

When I inserted a bleeding valve I did not loose much liquid - I prepared a "tap" to close the heater outlet out of wine cork. When I was ready I added 200 ml water to the system... and it was enough.
So maybe you don't need to add cooling liquid at all.