Thanks for the information. Do you recommend the ZDDP Supplement for a 2006 5.7 hemi wigh 170K+ miles? Also, I don’t see that the full syn is recommended. Y/N?

Also, I am looking to see if the 2006 hemi has an oil level sensor. I have seen a diagram, but can’t determine where on the crankcase it would be. My son ran the truck low on oil and didn’t receive a low oil warning until the pressure sensor threw a check engine code. He will be more observant, but still wondering about a level indicator as other vehicles have.

Thank you.