You would do well to actually know something before posting it... Your Tru-Oil composition is amusing and so far from reality it is laughable. The MSDS should show about those numbers for mineral spirits, but please enlighten me on where you get the idea turpentine could be interchangeable and just exactly what "oil varnish" is.
Now, read this carefully, because you are posing and in the worst way. There is no difference between tung and linseed oil in any meaningful way. BLO is never used in a commercial blend as it is a different product made with linseed oil, usually. BLO is where the worst grade of linseed oil goes. Many polymerization inhibitors are used to keep it from curing on the shelf or in transit. There are also curing catalysts, but poor ones.
Tru-Oil is made with whatever oil is most economical and meets Birchwood-Casey's grade that week. It is often a mix but may be either.
I could go on, but you get the point, maybe?
