Quote:
Originally Posted by 68bird400HO
Ended up going Mobil1 Synthetic Extended Performance. I found the product data sheets for their 3 synthetics (regular, high mileage, and extended performance) and they still have 900 ppm zinc and 800 phos in their 10w30. Maybe that is the norm with other brands too but couldn't find this info for them.
I think with that and just being a better oil than the old formulations, I should be fine for what I am running.
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Mobil 1 has several oils that have higher zinc and phosphorous levels than their standard 10w30.
They specifically recommend the 15W50 for flat tappet applications -1300/1200 PPM.
They also have the 0W40 that is the spec oil for Mercedes, Porsche and some others that has 1100/1000 PPM.