I am a Z-Alt rep and one of the keys to this product is the min ZDDP content is 1750PPM, plus there is a molybdenum additive that remains in suspension that coats the cylinder walls even after the engine has been off for a while, making it the best choice for a car that will remain is "hibernation" for any period of time. Yes it is more expensive than others, but how many times a year do you change your oil, twice (spring and fall?). The $160 in oil is far cheaper than an entire engine rebuild. Anyone who has scrubbed a cam can attest to this. Just passing along info that made me a believer/user/rep. -- Steve '63 Hemi Polara On Sat, Sep 3, 2011 at 7:14 AM, Steve Chervinsky <63hemipolara@xxxxxxxxx> wrote: > On Fri, Sep 2, 2011 at 9:45 PM, Paul L <pjlenn@xxxxxxxxx> wrote: >> Was just reading an article on current oil spec's. The new SN oils >> have an even lower ZDDP content than the previous SM variety. Down to >> something like 800 PPM vs 1800 PPM a few generations back. They >> suggested it to be a good idea to use a ZDDP additive for cars running >> a cam with higher spring pressures even after cam break-in. -- -- Please address private mail -- mail of interest to only one person -- directly to that person. That is, send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. -- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en.