Rick Lake,
Valvoline VR-1 has the additives you are looking for in a non-
synthetic and has the detergents for every day driving. Availabe at autozone where I live for 3.32 per quart. 1200 ppm of
zinc/phosphorous.
Let the flames begin but here it goes. I have seen many engines from engine builders including KC, Roush, HEB, Southern etc, they all need a little tightening here and there, the only bolt I have had to touch on my Lexus (no I am not a big fan of that rattle trap chassis) but the engine is sweet is the drain bolt on the
oil pan to change the
oil after 75K miles.
The "engine builders" are still growing as compared to the OEM and therefore just am not comfortable with them building an aluminuim block based engine. I have no doubt they can do it but statistcally you will find more failures on the alumininuim based blocks then the cast iron.