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Old 12-04-2012, 05:55 PM
robertobaggio20 robertobaggio20 is offline
Location: earth
Join Date: Oct 2009
Posts: 3,403
Mein Auto: car
There are two types of bottle seals like these : those that have silicates and those that dont. Those that have silicates, will sediment out easily within the cooling system, and will clog up the system and have a high chance of causing other problems. You can tell what they are by the need to remove your existing coolant, flush your radiator, put this in, run the engine for 1-2 hours, flush the car again and replenish the coolant again. The non-silicates seals are straightforward...just add the bottle to your existing coolant and that's all there is to it.

The silicate free ones tend to be more expensive...could run you up to $90. The silicate sealants cost around $50.

However, recently a forum member and myself conducted an experiment with this product :

It is definitely worth a try, it is not as good as a direct repair, but it may do enough of a good job for you to have reliable performance over the long term.

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