Hello I realized today after beating my head about my car's overheating problems that I have the wrong coolant in it.
About a year ago, my car ran dry. At the bottom of the expansion tank was an orange crust(also the manual recommend DexCool.. ). I ignored the Dexcool warning in my manual as one of those "you also need to take it to a certified dealer to get the oil changed" type of warnings. So I filled it up with green coolant. Well, reading up more I realize that I'm wrong.
About 6 months ago, I had a wreck and got the radiator replaced(salvaged) and the mechanic(who I'm convinced now is an idiot) filled it up with green coolant along with leaving several leaks. I took it to another mechanic and after fixing the leaks, he also filled it up with green coolant.
So I've been running green coolant for about a year now. How exactly should I go about switching to the proper Dexcool coolant? Would it do more harm than good to switch now?
Also, my car is having problems in that it overheats when sitting in traffic or idling. It doesn't have problems when going 65MPH or so. Could this cause this kind of problem?