Originally Posted by dmitrizzle
Does it matter which kind of synthetic oil? My shutter assembly doesn't actually give me access to all the gears and contacts.
Eh? The only reason you wouldn't have access is if you haven't gone that far with disassembly. Assuming you haven't, and you don't want to, then forget about lubrication and just flush with solvent.
Should you decide to go further, you want a very light, stable synthetic. I use Breakfree CLP, which is a firearms lubricant, but there are plenty of others. More important is to keep it solely on those points and away from everything else, especially the shutter and aperture blades.