High-zinc oil or ZDDP oil additives?

Thanks to the EPA, formulations of motor oil seem to change monthly. I would wager to guess you have mild valve springs? That would be in your favor. I use a little lucas additive. I used to mix 20% Cenpeco race oil(over 2000ppm ) with 80% Mobil 1. I drive so little anymore frequent oil changes are probably just as critical. Rotella is good, but not what it was 2 years ago. I wont pay the boutique motor oil prices.