Re: Zddp question
Posted by su8overdrive On 2022/9/29 23:00:43
It's easier to instill concern than quell it.
The Kendall engineer with the extreme high output 350 in his '67 Camaro with vastly higher valve spring pressure than our lazy flatheads, uses the same off the shelf GT1 10W/30 i use, which has the same ZDDP level as Quaker State/Pennzoil (both owned by Shell), and all other major brands, which is to say the same level as in the 1970s, when we never heard any of this fear mongering.
ZDDP above 1,200 ppm can increase corrosion, not a problem with most name brand quality motor oils, which are all around 800 ppm:
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The Kendall engineer with the extreme high output 350 in his '67 Camaro with vastly higher valve spring pressure than our lazy flatheads, uses the same off the shelf GT1 10W/30 i use, which has the same ZDDP level as Quaker State/Pennzoil (both owned by Shell), and all other major brands, which is to say the same level as in the 1970s, when we never heard any of this fear mongering.
ZDDP above 1,200 ppm can increase corrosion, not a problem with most name brand quality motor oils, which are all around 800 ppm:
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CCF_000050-1-1.pdf Size: 248.25 KB; Hits: 78This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=248733