yes, but will dilute to the lesser quality of the two,and all color or any antifreeze can be added to other but will not replace it
Not really red/green longlife coolants should not be mixed with blue type . Blue is good for 2years red/green 5 years .blue is good for older cars as red has certain chemicals that can attack cast iron and steel
NO
If you are asking about mixing different color or manufacturers coolants, it is not recommended.
If you mix red and blue and green you will get brown.
If you mix red, green, and yellow you will get a dark green bogey color!
If you mix the colors red and green you'll get the color brown.
You cannot get orange with the colors red and green. To get orange you should mix yellow and red. If you mix red and green you get brown.
dark green
You mix 33% red, 92% green, and 18% blue.
If you mix red and green paint you get brown.
brown
Brown.