I was wondering if anyone could help me understand any real benefit using the new SN+ oils, as opposed to the SN oils in a regular non turbo-charged, non TGDI automobile? Looking at various VOAs, generally speaking, the calcium numbers have gone way down, usually around 500-600ppm, while magnesium levels have gone way up, giving a rough Ca/Mg total of around 1900ppm-2000ppm. For example if an old SN oil had Ca of around 1900-2100, it will now be around 1500. And Mg will be around 400-500. I understand how this may be good for the whole LSPI thing, but what about in a regular (older) car? In addition, it was my <limited> understanding that Magnesium is a more abrasive detergent than Calcium, so I was just wondering how better/worse/the same it would be vs. its replaced SN counterpart--mainly for engine protection/wear. If anyone can educate me on this, I would be most appreciative. I know the new standards supersede the previous ones, etc.etc., but when seeing the numbers drop, and others add up to address a newer type of engine, while the API protection parameters might be "sufficient", I'm just wondering if ALL potential "good-aspects" of the SN+ will be applied to older car engines (i.e. Manifold Fuel Injection, Fuel Rail, or even Carbureted). Thank you.