Good answer ppopeye
...and a very good question creeture3!
Brock...just how do you know what coolant additives contain Silicates? The only additive I can recall labelling
does not contain silicates is Motul.
My understanding of silicates is though they do indeed protect against corrosion of aluminium, silicate
drop-out in solution actually contributes to corrosion, especially dissimilar metal corrosion, apart from the silicate particles blocking small galleries, as found in 1100 radiator cores. I think also, that the 1100's
passage of coolant throughout the engine lends itself in promoting drop-out.
My Honda dealer has suggested Tectaloy 60 Plus for my ST1300. See http://tectaloy.com/product/60-plus-green-general-purpose-coolant-rtu/
Problem Pete I have with this product is, what is its ratio and generally speaking these
green coolants where noted for containing silicates. I mention this as if Tectaloy 90 Plus is a 33% solution, what percentage is 60 Plus? My preference is for a 33% mix is ample. Though not having ask Tectaloy, I have yet to read that their product, doesnt contain any silicates.
Again, good question.
The can :-)