RE: Which coolant for a flush on a 2001 Elantra 135K miles?
I think you just need a 50/50 mix of plain old ethyl glycol, the green stuff. Flush out your system with a garden hose, turn on your heater when you do it. You're supposed to change it every two years according to some mechanics.
Last edited by NovaResource; 09-21-2011 at 08:26 AM.