Quote:
Originally Posted by panda529e699
Hello
I was told that the pink stuff was the best, as it lasts longer, would be interested to know what the difference in colours is, I put pink in my car and if its not compatible will need to get it out.
Thanks
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Told that by the person selling it i guess?
If it is the OAT stuff, even if you've thoroughly drained and flushed all the ethylene glycol out, it's still not suitable for redblock engines. It was developed by the Japanese at the end of the last century for use in all-aluminium engines, because EG antifreeze can attack the aluminium.
However, the OAT stuff attacks cast iron a lot more than EG ever attacked aluminium as well as attacking the gaskets and seals, as Bob rightly pointed out.
If your pink stuff is OAT based, even if it says "Universal" antifreeze on it, the best advice i can give if you have a redblock, or any other engine older than about 2000 (gaskets in those engines are susceptible to decomposition from OAT) is run it over winter as it is and hope, come springtime, drain and flush the system, refilling with water, A couple of weeks to a month later, add some flushing agent and do another drain and flush, refill again with water. Repeat again a couple of weeks to a month later and then same again.
By this time, you should have removed all the pink stuff and be able to refill with Ethylene Glycol, sometimes referred to as "Silicate" antifreeze as it contains certain silicates and water.
Then, assuming you have a red block, don't ever go down the OAT route again.
The reason for such a thorough flushing routine is that as Bob mentioned earlier, mixing EG with OAT causes the coolant to form a gel which is impossible to shift. This gel is formed because the acid in the OAT (Organic Acid Technology) causes the silicone to precipitate out of the Etheylene Glycol and form a gel.
Finally, a word to the wise - don't go purely on what is recommended by a particular supplier or manufacturer. I've come across many that have recommended one product and found it would have done untold damage to my car.
Do your own research, make sure that the product you have in mind fits ALL the criteria you need it to fulfill and doesn't contain any additives that will damage your car.
