To make a long-oil primer, add an ounce of oil (boiled Linseed oil) to the quart. If you are priming yellow pine, add an ounce of stinky turpentine. For every ounce of oil, add about a teaspoon of Drier to see to it that the drying time is a day, not dayS.
If you want to thin it without the smell of turps, use odorless paint thinner. I use the turpentine on old dry yellow pine because I believe that there's something homeopathic about adding some yellow pine "essence" into the paint that's trying to stick to it. I heard this from some old-timers, and have stuck with it. certainly it does no harm.
Casey

Thanks, Casey.

I was planning to coat all the pieces with the boiled linseed oil and turpentine mixture. Would doing that make unnecessary to add anything to the primer?