diesel oil alternative?

Lucas Hot Rod oil. 2100ppm of ZDDP. Been using it for a few years. Flat tappet cam 340, no wear issues.
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That's got too much zinc in it IMO. Only need about 1400ppm max. I like to mix it down to get levels I prefer. I had a spreadsheet to calculate phosphorous and zinc level when mixing oil together to get a decent level of both.

To much zinc can cause other issues with material left behind.