Kung mga CI-4/SL oil pa ZDDP yan.

Pero mga newer oil Moly na.

Ako personally mas ok pa din zddp dahil dual purpose. Hindi lang daw friendly sa catalytic converter.

The "dexos 1" spec will be relatively rigorous, designed to enhance engine protection AND engine oil longevity. As a result, for an oil to meet the "dexos 1" spec, it will likely be necessary for oil manufacturers to utilize primarily Group III and/or Group IV basestocks in the formulation, certainly adding considerably to the cost of the oil, thus raising the price for the end user. In essence, primarily synthetic oils and high quality synthetic blends will be able to meet the spec.

Additionally adding to the cost of the oil will be the inclusion of molybdenum in the spec for it's anti-wear properties. Although ZDDP is extremely cheap (and effective) as an anti-wear additive (while also working as an anti-oxidant in the oil), molybdenum is incredibly expensive (in the order of 50 times more expensive) and does NOT also act as an anti-oxidant - thereby requiring the use of additional additives to serve the purpose.