Which gets us back to the question how much ZDDP is there if you have 0.108% phosphorus and 0.119 zinc! PaulH. ----- Original Message ----- >I found this on their website: > > http://www.conocophillipslubricants.com/documents/kendall/automotive_engine_oils/Ken%20GT-1%20High%20Performance%20MO%20TDS%20Web.pdf