My new to me 2000 with 4.3 needs all fluids changed out......and with ALL the horror stoires and videos of DEXCOOL (agent Orange for engines)
has the formula changed or are we all using alternative coolants????????????????

I have 150K on my ride, and I cannot report when it was last changed. I just found the cabin filters were never changed out. So I imagine service was
only on as as needed basis for this ride.

What say you with these Vortecs ...........Orange? Green? Yellow? What say you.?????? Thanks AZ

 

as long as its c hanged when required...it won't be a problem. When left in to long it becomes acidic and eats intake gaskets. if you ever have to do intake gaskets...get the update style that uses a metal frame vs plastic frame.

I would do the fl uid change and stay with dexcool.

 

Thanks Tech 2, yes I saw the new intake gaskets by Felpro with the metal frame and all. Okay well let's see if I can fidn a good deal on Dexcool somewhere.

Thanks again for the reply.

Help seems ot be very scarce on this forum or is it just that I'm new?

 

New, old, might be no one has the answer. I prefer green although my suburban (my opinon), but it has dexcool in it as the previous owner only used ac/delco on everything including oil filter. The things you've read about dexcool eating plastic turkey trays in the intake were probably true 15 years ago, again IMO the material used in the engine wasn't where it is in "current" manufactured engines. You should be able to find dexcool at autozone or O'Riellys . There is also a mixture that is "compatible" to dexcool, and ehtelyn glycoll (green), I'd however stick with one or the other, and not mix.

 

Thanks Kevin..........what you posted is what I thought and heard but I dont always have the latest info so I decided to post and see what the owners have to say.

I have some leads on the Dexcool............thanks.

And as you said, nto a good idea to mix the two...........

Thanks again, AZ