It says safe for aluminum engines. Doesn't say one way or the other about silicates. Is there a way to determine if it's silicate free? The only things listed are Ethylene Glycol, Diethylene Glycol, Sodium 2-Ethyl Hexanoate, Sodium Neodecanoate & water. The nearest store is not close by. I still have to take the bike back apart to see why the kickstarter I added locked up at first (see other thread), in the meantime, I'd like to know if I am going to hafta go to the autozone or schucks after I get it back together. (The motorcycle places are closed on Sunday) Living in the country has drawbacks, like distance from stores, and specialty stores closed on Sundays.