| Blackstone Labs and ZDDP oils [message #109302] |
Tue, 21 December 2010 14:07  |
Steve Stolley
Messages: 61
Registered: April 2008
Location: Ivins, Utah
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Some time back Steve Ferguson posted on the forum about the Jim Stark presentation and GMCWS in Vegas in which it was suggested that modern oils without ZDDP are safe to use in the GMC 455.
Given the hassles with tracking down oils that still contain ZDDP or paying for a ZDDP additive, are those who attended convinced enough to make the switch to modern oil?
I ask because it's time for an oil change and my Costco no longer stocks Mobil 1 15W-50, but does have 3 x 1 gallon Delo 400 LE 15W-40 for $39. While the Delo box has API CJ-4 in big bold letters, it's also approved for API CI-4 PLUS.
What's the consensus?
Steve Stolley
76 Glenbrook
Ivins, Utah
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