Bro, that's exactly the question I had when the mechanic asked me what
was in it. He said IT STILL could be a problem. I didn't relieve
believe that, so i spent a few minutes searching the web for
discussions of mixing coolants.....and seems alot of people agree with
him. But my searching did not come up with any hint of what
coolant came with my truck, although i tend to "think" it's
regular/green from what people are saying.
My experience was with GM's dex something or other in a 94 vette. The story
was ya couldn't mix the dex(orange stuff) with the green or yellow. Also the
dex stuff was causing problems with the heater/radiator. I think the deal
was that it was plugging it. But, everybody was dropping the orange flushing
it and going to the green or yellow. No problems doing it. Given the coolers
that a vette has ya have to work to get it out.
Honestly I'd flush it good, put in my favorite color and move on.
I just changed the coolant in my wife's 98 Intrepid (what a pain in the ass
that car is) and it came with the orange stuff. Many of the newer long term
coolants say that they CAN be mixed with the green stuff but they don't
recommend it because it would be very difficult to determine what your
freeze protection would be.
If at first you don't succeed, you're not cut out for skydiving
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