- Sep 13, 2014
They are reducing ZDDP quantities to decrease the ecological footprint on the environment: (taken from wikipedia): (EPA or sometimes USEPA) is an agency of the U.S. federal government which was created for the purpose of protecting human health and the environment by writing and enforcing regulations based on laws passed by Congress In fact, early failure of an engine would also impact the environment because you cannot recycle everything and also producing a new engine will produce harmful emissions. Therefore, it is in their interests to make engines and catalytic converters last longer
Originally Posted By: bullwinkle
The EPA & equipment manufacturers are reducing ZDDP to make catalytic converters last longer, hopefully out of warranty. Not sure longer engine life is in their best interest.