Quote: If you want to clean out the rust and sludge use vinegar, fill it up. let it sit for 1-2 days, rinse it out and refill with coolant. there won't be anything but good clean stuff inside when you are finished.
Like drain the system as much as I can....and fill it up completely with vinegar?
Be sure and use white vinegar for this. Don't use apple cider vinegar unless you're gonna make salad dressing.
Did search on this topic and come acrose this thread anyone no if vinegar has a negative affect on the the newer plastic radiators and heater cores?..........Thaxs
anyone no if vinegar has a negative affect on the the newer plastic radiators and heater cores?..........Thaxs 
