Originally Posted by aquariuscsm
I know the add pack got watered down via analyses some years back.
Yes Mobil 1 High Mileage use to have elevated levels of ZDDP, now it has the regular ILSAC amount.
It was a sleeper performance oil back then, thicker and with more zinc, now it's just thicker- but still a good oil.
I like Mobil 1 10W30 HM as it's rated both SN-Plus and Euro A3/B3