What can I use to get WD-40 spots off my vinyl siding ??

Mineral spirits or a high volume alcohol. Wear rubber gloves! You might also try nail polish remover if you have it available as it contains a lot of alcohol.

http://www.howtocleanstuff.net/how-to-remove-stains-from-vinyl-siding/

WD 40 is oil based. Try a mix of baking soda and Dawn with warm water and scrub.

Do you know what the spots are on your siding? For a basic clean that is not oil based, use blue dawn dishsoap with baking soda, make a paste with it and let it set for a few minutes on the siding, then scrub off with a scrubbie sponge or a microfiber cloth, rinse well. If oil based, then I would consider WD 40, but expect a cleanup for the WD 40.

W/Up Liquid on a cloth or Surgical Spirit!

Try Blue Dawn dishwashing soap it's pretty good at removing oil stains.

Hot soapy water--with a small splash of ammonia---that's all you need.

I used kerosene to remove oily residue left on my homes' vinyl siding when messy concrete installers our cement and if got on the siding.

Apply the solution to the discoloration after mixing equal volumes white vinegar and water. Place baking soda on top of the stain and leave it for a few minutes. Use a soft-bristled brush to scrub the stain off, and then rinse the area with warm water.

Hi Mitchell, hope this helps you. To remove WD-40 from vinyl siding, the safest and most effective method is to simply use a mixture of mild dish soap and warm water; spray the solution onto the affected area, scrub gently with a soft-bristled brush, and rinse thoroughly with clean water.