Volvo RWD 444-544 Forum

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ZDDP Oil Additive 444-544

posted by walrus3 on Fri Dec 23 12:32 CST 2011
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last visit: Wed May 22 17:40 CST 2013

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This has been discussed ad nauseam on several forums including this one (what were you doing about a year ago?) and the conclusion cited by Phil and others is what I consider the most authoritative. The Valvoline/NAPA Fleet Plus DOES have the required level of ZDDP and is reasonable in price, especially the NAPA-branded oil, which is otherwise identical.
The B18/B20/B30 cam and lifter problem was sufficiently well documented when the engines were new that the American Petroleum Institute developed a "Volvo B20 Cam and Lifter Test" for oils. Thus far I have not been able to get a copy of the procedure. Maybe I should write to the API....
--
George Downs Bartlesville, Oklahoma

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ZDDP Oil Additive [444-544]
posted by 59445 on Thu Dec 22 08:01 CST 2011 >

ZDDP Oil Additive [444-544]
posted by Suppo176 on Thu Dec 22 23:08 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by 58duett on Fri Dec 23 00:43 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by Sam G on Fri Dec 23 01:45 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by 59445 on Fri Dec 23 08:07 CST 2011 > V
- ZDDP Oil Additive [444-544]
  posted by lukeball on Fri Dec 23 08:58 CST 2011 > V
  - ZDDP Oil Additive [444-544]
    posted by walrus3 on Fri Dec 23 12:32 CST 2011 > V
- ZDDP Oil Additive [444-544]
  posted by MrBob on Fri Dec 23 09:29 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by Lord Volvo on Sat Dec 24 13:44 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by 59445 on Sat Dec 24 17:50 CST 2011 > V

ZDDP Oil Additive [444-544]
posted by matt b on Sun Dec 25 00:57 CST 2011 > V

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