I purchased Stoner's More Shine Less Time - seems to work as advertised. I'm concerned about "silicone" as I understand from other info that silicone can disolve waxes intentionally put into tires to help them last through UV exposure, etc. There is no information on the can or the website. When I called, the person did not seem to know anything. Anyone know if it is 'safe' for long-term use?