hinges
Some of my cupboards have these spring loaded hinges, and they have started making an horrendous noise.
They look like this: 
How do I lubricate these hinges? Do I need to open them up? I'm afraid that if I open the wrong screw, putting them back together would be difficult.
If you cannot get them apart, try spraying the hinge pivot with dry silicone spray. Do not use oil based products such as WD40 or PB Blaster, as they will stain and turn black with collected dirt. Spray with silicone, work the hinge and repeat. Hopefully it will work it's way into the pin and quiet your hinge. Good Luck
If you don't want to use european style hinges, you need to use an overlay hinge such as this type
These can be found ast sites such as Rockler, or in many DIY centers.
Best Answer
If dry graphite is problematic to apply you can also find it suspended in a liquid for use in locks. Lightweight oil or volatile lubricants flow into the lock leaving the suspended graphite behind when they evaporate. (Dry graphite, if you haven't had a reason to use it before, is also very easy to "shoot" by squeezing the tube. It's a very fine powder.)
A trip to the local hardware store will be a big help since you can see all of your options. "Zoom spout turbine oil" is probably not primarily used on turbines; I think people like the long, flexible tube.