[T3] oils and old oils...

FE Meek ftalker at gmail.com
Thu Jul 24 18:18:24 PDT 2014


Hi there
You may have the reason for this apparent valve train failure in the very oil you have "stashed."  Modern oils are fundamentally better in many ways and for many reasons, their lack of ZDDP notwithstanding.  
But, Pennzoil, at least the old "stash," was, (and, perhaps still is), an ash based oil...never recommended by any air cooled manufacturers back in the day.   Quaker State, Valvoline, Castrol and Kendall, (and a few others), were the oils for air cooleds from VW to Porsche.   While the old Pennzoil "might" have had adequate ZDDP, the break down of ash-based oils at normal air cooled operating temperatures make it a dicey choice at best.  I'd get rid of that stash ASAP. 
Hope this helps.
Best regards,
FE Meek


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