1999 Chrysler 300 Correct coolant Orange color.

The only thing that will happen is that you'll lose all the benefits of the orange coolant. The orange is a silicate free, 5 year coolant. The green is a regular 2 year coolant and when the orange is contaminated with green, it is considered all green at that point.

In any repair advise you find from an advisior you will find a Do not use Ethylene in a orange colored recommended car. Why is that? I had no idea what coolant was put in my car when it was worked on I wanted to keep my coolant that was in already. Although, Green was put in and lasted 21 days and then poured out of my radiator. I always state that my car needs orange color and I always use orange color in my car. I need to find out why the green didn't stay in the radiator and why it poured out if possible.

I assure you it had nothing to do with the type of coolant. You just need to pressure test the cooling system to locate the leak.

There is only one coolant listed in the repair manual and my part is only 1 yr. old and has less than 30,000 miles on it.

And your point?