As I read deeper and deeper into this issue it seems the controversy grows. I post this here for informational purposes as of today 10/21/22.
I reached out to Shell to inquire the amount of zinc in what’s most readily available in my area Rotella T4. Their response below:
“Hi,
Thank you for contacting Shell Technical.
The Shell Rotella T4 Triple Protection 15W-40 contains approximately 1200 ppm of zinc.
Hope this helps.”
I am asking if this value is consistent across the various weights.
