I'm doing a coolant flush due to totally dismantling the entire intake manifold on my car. I'd like to know if there is a "preferred" or "high quality" brand of coolant that is noticably preferable to any other brand, and also, what do you guys use in your car?

I'm not considering using Evans NPG/+ or any non-traditional coolant yet, since the engine is probably going to be due for a rebuild in the next year or two anyway and I'll switch to a low pressure system then.

So, with that in mind, what is your opinion on the subject?

 

I've no complaints about Prestone's flush.

But the instructions to leave it in the motor for 10 minutes are baloney. Put it in your 7 and then take it out for a half hour cruise. Let it circulate and do its job, then drain it...

 

Yes, Prestone.

https://www.rx7club.com/forum/showth...=coolant+brand

 

Nice link.

 

I use Prestone with some RedLine watter wetter.

 

I second that (Prestone with water-wetter).