Coolant Flush?

weedeater said:

The vw coolant is good enough such that flushing with some other sort of chemical is not required nor desired. That is, there will be no corrosion of any sort in the system.

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Powder Hound said:

I have had the green stuff in other cars I have owned. Yes, my results were pretty good, too.

But I also had to flush & replace it every couple of years or so. And, it has silicates that cause wear. So essentially, the corrosion, if it occurs, is worn away by the coolant flow rather than not ever occurring.

The OAT coolants that are being used now last much longer, so it will be better in the long run.

The one factor I think might be pertainent is that if you always take your car to a shop, and the shop doesn't know anything about OAT coolant, then the danger to your car if coolants get mixed is far higher than if you just leave it with the green stuff that someone else replaced it with.

Another factor would also be that if your shop doesn't know about OAT, then they probably don't really do that much VW work, so you might want to shop elsewhere for your service work.

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