singapore shops are abit differnt from US shops. For example, we dont have anything resembling radio shack, or wall mart for that matter. guess what, we dont even have the fancy energizer lights here!
anywway....silicone grease can be found and any dive shop here. I bought mine in the basement of lucky plaza at orchard. There are some dive shops at the concourse near bugis. there are actually alot of dive shops around, just look up the yellow pages for one near to you.
Crenshaw