Assuming an older engine that may benefit from ZDDP...
Let's say one oil has around 750-800 PPM ZDDP. Another has 1,200.
My simple understanding is that ZDDP is consumed in a sacrificial capacity as it protects high-wear surfaces. (May or not my be saying this correctly.)
If this is accurate, then does the lower ZDDP oil above provide protection, just for a lower number of miles?
Would an oil with 750-800 PPM provide protection for a certain number of miles before being 'used up'? And, would the higher ZDDP oil provide the same protection, just for a greater number of miles?
Or, does a higher ZDDP concentration protect better right from the start? Is more ZDDP needed initially to coat what needs coating? Or, is a lower level of ZDDP sufficient?
Let's say one oil has around 750-800 PPM ZDDP. Another has 1,200.
My simple understanding is that ZDDP is consumed in a sacrificial capacity as it protects high-wear surfaces. (May or not my be saying this correctly.)
If this is accurate, then does the lower ZDDP oil above provide protection, just for a lower number of miles?
Would an oil with 750-800 PPM provide protection for a certain number of miles before being 'used up'? And, would the higher ZDDP oil provide the same protection, just for a greater number of miles?
Or, does a higher ZDDP concentration protect better right from the start? Is more ZDDP needed initially to coat what needs coating? Or, is a lower level of ZDDP sufficient?
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