It is not correct to talk about just ZDDP as the only wear "protectant" additive in an oil, or even the most important. In the oil industry, just zinc in not measured, a class/group of minerals are measured and reported under the heading of ZDDP. It is a combination of additives (that also include ZDDP) that gives the ware protective properties of an oil. Let's leave it at that.
The Mobil 1™ FS 0W-40 has just about the best wear protection properties of any commercially available oil...and it just so happens to have a lot of ZDDP just to give you that warm fuzzy feeling inside. And as an added bonus, you can but it at Wal-Mart!
BUT it MUST say "FS" on the bottle...that stands for Fully Synthetic. All of the previous Mobil 1 oils are just semi-synthetic, even though they advertised then as "synthetic".
That is the best oil to use for the Lotus.period.
Whoever said that island life is great was never committed to Alcatraz...