Need your opinions on first oil change
- Thread starter Tundraz
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Originally Posted By: Duntov
EPA approved oil has less than .12% ZDDP.
Actually it's less than 0.12% phosphorus, which corresponds to about 1.2% ZDDP. Roller cam engines and broken-in flat tappet engines without radical cam grinds and/or very high valve spring pressures do fine on 800 ppm P or even less, according to SAE Technical Paper 2004-01-2986 "How Much ZDP is Enough?".
ACEA E6 heavy duty European diesel oil, designed for very long drains, has a P limit of
Charlie
EPA approved oil has less than .12% ZDDP.
Actually it's less than 0.12% phosphorus, which corresponds to about 1.2% ZDDP. Roller cam engines and broken-in flat tappet engines without radical cam grinds and/or very high valve spring pressures do fine on 800 ppm P or even less, according to SAE Technical Paper 2004-01-2986 "How Much ZDP is Enough?".
ACEA E6 heavy duty European diesel oil, designed for very long drains, has a P limit of
Charlie
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