| Re: Blackstone Labs and ZDDP oils [message #110726 is a reply to message #109302] |
Mon, 03 January 2011 19:13  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
|
Senior Member |
|
|
I'll say that ZDDP was in oil all those years during non roller lifters as it worked and saved warranty claims. That said more is not better and too high a level results in spauling (pitting) of the polished friction surfaces when the phosphorus levels become evil. A friend of mine has purchased a supply of US (not offshore) pure ZDDP and is working on packaging right now. His theory is one step beyond the 'ZDDPlus thow in one bottle for 5 quarts' theory. This will be for the more concerned (read anal) hobbiest who wants to to get his levels to the exact optimum. You will have to get the spec sheet on the particular oil you are using and then add the appropriate amount to get the end final concentration. He will have charts to expedite the process. If say you are starting with 900PPM oil and want 1200PPM and have 5 quarts you will add X ammount. Also note that as Matt brought up, the longevity part of the equation is not well supported by racing oils which are meant to do a race and be discarded.
John Lebetski
Woodstock, IL
77 Eleganza II
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
