I saw a couple of ads in a car magazine for outfits that are selling "classic car oil" with zinc in it. The local farm store had a sale of house brand oil with the API L rating so I bought several gallons. It's the M rated oil that's short on zinc.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.