Redline Water Wetter

I reckon your right on there howesy, they seem to be the main cause of any hilux,cruiser overheating. The turbo could be an issue as mentioned on exploreoz before when I looked at putting one on my old lux and decided against it from people on here who have been there and done it. But then you get people who like to play with either turbo or pump and have no idea what there doing and create there own problems. Regards Steve M

patrolman,
If it's any comfort I did exactly the same with my 4.2 turbo. I bought a new 3 core radiator when I installed the turbo, didn't spend that much I must admit, had the same problem the extra core plus the air con rad restricted the air flow to much. Like yourself I went back to a standard radiator and never had a problem.
If the person who initiated this thread reads this, wetting agents do work to a point, they use them in drag vehicle engines to get maximum heat transfer between the metal and the cooling agent (water). As mentioned by others, a wetting agent is treating the symptom rather than the cause, could well be a problem with several bits, radiator, hoses, fan etc etc. Fix all the other stuff then start looking at wetting agents, you'll probable find you don't need one. Air circulation around the engine bay is something to watch. Lots of people get a truck load of air in but getting the hot air out of the engine bay is another issue often overlooked.

having used the stuff before....it will compliment a healthy cooling system. But won't fix the real problem.

cheers Stefan