Coolant type

What type of commonly available non-silicate coolant is good for the WRR (or any bike)?

I've always heard that you want a non-silicate coolant for bikes because they are easier on the water pump; but I've never seen coolant marked as such (unless it's the way overpriced stuff at a bike shop).

So, which make/model of coolant is silicate free?

thanks!

I use the overpriced stuff at the bike shop:
Pro Honda coolant.
Comes in a blue bottle already mixed 50/50 with distilled water and has none of those silicates you're worried about. :)

I've wondered, too. Here's more on the topic:

http://www.advrider.com/forums/showthread.php?t=422189

Sarah