I like colour coordinated might go for the Mercedes coolant, $15/Lt is cheap compared to the $60/Lt I paid for transmition oil.

Oh and nige lucky for you they are different colors, so at your age you don't top up with the wrong one.

On that point I let a person know at the servo they were about to fill their golf deisel with premium unleaded... I'm sure they could have givien me the $5k I just saved them lol

Mercedes coolant is blue, but $15 a litter or something. Get the Toyota one. I planed on it as I'm redoing one of my lines come summer and will put better coolant in too

Thanks for the info guys, looks like I am now going for the Toyota red!
Colour wise it might clash with my blue transmition oil ;)

The hardest thing with the old engine blocks is that you dont know the history of the block. There could be all sorts of scale waiting to come away regardless of the coolant you use. In a new car, using the good stuff from the word go will always give you the best results. (that 5 year stuff with the cruiser is entirely believable).

Unless you have had the block properly acid bathed and cleaned and scaled away, then there is no real way to assume that cause you are using a better coolant, you will get no problems.

Still thats no reason to not use the better stuff, just no guarentee that it will stop any problems.

Seems like the toyota stuff is the favourite.

Chuck that stuff in levey, or go the castrol if you are a tight A**E.

i highly recomend toyota super long life red coolant to i use it in my 100 series landcruiser and had it in thier for 5 years drained it and not a single rust in radiator or in water!

use 50/50 ratio with distilled water!

if your getting corrosion i'd say you have too much coolant in the system

ive used the nulon green concentrate for years and never had an issue.
i always mix in a little less than they reccomend just to be safe

Im not sure on life span of the product, but its this product

supercrap auto reference
castrol radiator stuff

Castol Australia
Castol australia website
the one in the bottom right corner of the four pictured

In the past, I have had to drop the radiator coolant before it wears out i spose since i am always tinkering so it never wears out on me, but at $5.00 a can its not expensive to replace.

Some quality products like the toyota red coolant actually work out to save you more in the long run. Instead of having to later replace corroded radiators, water pumps,thermostats,heater pipes etc...
Better safe than sorry

reuby,
from your experiences i would say the castrol you mentioned is a quality product even though not expensive.whats the lifespan of that particular coolant?thanks just to get a comparison to other coolants lifespans.

Its fitting Toyota followed Mercedes with their own red coolant.
The Germans and Japanese focus on quality, durability etc