When vinyl windows and doors don’t operate smoothly, it’s usually because gunk has built up in the channels. But sometimes even clean windows and doors can bind. Try spraying dry PTFE spray lubricant on the contact points and wiping it off with a rag. Don’t use oil lubricants; they can attract dirt, and some can damage the vinyl. Make sure to keep your windows clean all year long with these pro tips.
Inspect and replace your engine air filter. Just unscrew or unclip the air filter box retainers and remove the old filter. Then hold a shop light behind the filter to see how much light passes through. If the filter blocks 50 percent of more of the light, replace the filter. If not, put it back in, secure the air filter box cover and keep driving. Get the full step-by-step on changing your air filter here. It’s one of the easier things you can do to fix up cars.
If you have shallow scratches or nicks, hide them with a stain-filled touch-up marker. Dab on the stain and wipe off the excess with a rag. But beware: Scratches can absorb lots of stain and turn darker than the surrounding finish. So start with a marker that’s lighter than your cabinet finish and then switch to a darker shade if needed. For deeper scratches, use a filler pencil, which fills and colors the scratch. Or, try using a walnut to remove scratches in wood!

How to DIY it: This job can be messy, so protect nearby surfaces by covering them with plastic or cardboard. Spray the springs with garage door lubricant (about 
$7 at home centers). Don’t use oil, grease, or other lubricants. They may be cheaper, or you may have them on hand already, but they won’t work as well and tend to pick up dust and grit—just what you don’t want on moving parts.
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