I'm getting ready to do a radiator flush this weekend, and was wondering if anyone has tried any of the coolant additives, like Prestone anti-rust stuff or enginkool? I wasn't sure if they were worth it, or if there's potential to do more harm than good with that stuff.

Tom

 

I dumped some Anti-rust into the radiator on my Escort. Don't know if it works, though. I won't know until next fall.
Usually, I avoid any such additives or chemicals in the Runner.

Just FYI...make sure you use Toyota RED coolant. I don't know specifically what the difference is, but I've been told by several reputable mechanics, including non-dealer salary, to stick with what the user's manual recomends.

I'll be flushing mine next weekend. I just got my TRD thermostat

 

I don't use the additives, but I do use distilled water and Toyota red long life anti-freeze.

 

Check this out......

http://www.batterystuff.com/cooling/...i-25_popup.htm

RMI 25, Red Line Water wetter and distilled water is what all the turbo car racers use.

Does a great job too.

 

Great guys, thanks for the tips!

 

I used Redline's Water Wetter when I had my turbo 4runner and honestly couldn't really tell the difference. Never did any tests though.

Salue