Didn't know where to post this. Some pure silicone products imply that "petroleum based" versions might be detrimental to "some" elastomers. You read the label of many automotive care products to see that they contain petroleum distillates: Armorall, most sealants/waxes, etc.. Most (not all) silicone sprays with petroleum distillates say safe for rubber,plastic, vinyl, and painted surfaces. Is aerosol silicone safe for automotive rubber?? Where did I get the idea they were not? I remember reading a debate about the newer formulation of Armorall at the Meguires forum and a Meguires tech. stated that the petroleum distillates in these products were mild, flashed off, etc., and were safe to use. I find it hard to believe that these aerosol products can state rubber,plastic,vinyl safe and then cause damage. Someone set me straight!