Originally Posted By: Pablo
Interesting, thanks. Not big on coolant additives. I had a terrible run in with Water Wetter in a brand new Volvo (yeah I know, dumb), the stuff made black sludge in the cooling system within days of pouring it in. Not pretty.
Yeah, I agree Pabs. RLWW is the only RL product of which I am actively and permanently suspicious. I tried it in the nearly-new cooling system of my 2003.3 V-6 Camry and within days, found the ovflo bottle and radiator filled with a cream-colored, cheezy sludge-like stuff (I'm sure all you degree-holding chemists are cringing -- and I don't blame you...). At least mine wasn't BLACK and slimy. The dealer in New Orleans was relatively merciful with me on the drain, flush, and refill.
And FWIW, if you're not totally gun shy now, the very tech who rescued my cheezed-up Camry's cooling system recommended Royal Purple's "Purple Ice" product. I presently have it in all three of our Toyotas, and have for years, with zero signs of cream cheese sludge. Candidly, I have no idea whether or not it's providing a worthwhile benefit or not (it may well have during one or more summertime extreme excursions, but who knows...). But if you're interested, and aren't scared away by your RLWW experience, RPPI may be something to look at.
p.s. hope your neck is doing well...