"No offense intended but your example of a Non detergent oil 'claiming ' to have a low anti-wear treatment - the less than 10 ppm of zinc / phos is not a treat rate but trash in the low quality oil's base stock. Non detergent SA motor oils commonly found in US automotive stores and discount grocery chains DO NOT have ANY anti-wear, detergent/ dispersants, etc. It pretty much is a base stock with a pinch of maybe a corrosion inhibitor."
No offense taken, but your information is skewed. This is not trash or background readings. I have another analysis from a SAE 40 weight ND stock that has even higher levels of AW additives and RI and tbn mediators.
Remember, non-detergent simply means that the oil has no DD additives, it doesn't imply it doesn't have AW additives and some RI.
"It may be true for certain brands of racing oils, but it definitely is not a hard and fast rule that ALL racing [oil] do not contain detergents / dispersants. "
Please note I included this sentence:
"Some oil companies put SL levlels of DD's in their racing oils, but as a norm, Racing Oils are for racing and not [for] daily driv[ing]." This implies racing oils have low levels of detergents, but that there ARE exceptions and you're correct, contact the tech department and attempt to determine if the Racing Oil has detergents and at what service level, or send in a VOA of the oil.
But if you look at the requirements of a Racing Oil, it doesn't really need DD additives. It is to be used on a per race basis and drained after the race. Anyone who uses the same oil for oval track racing and daily driving doesn't deserve to have the keys to the car.