Synthetic oils

Sure synthetic oil should be going into this 360 magnum after its been rebuilt, thought it was not recommended till after the first 3000miles. Maybe use VR1 till then.

That's really more of a myth than anything. Dodge even puts Mobil-1 Synthetic into their cars out of the factory!

https://www.mobiloil.com/USA-English/MotorOil/Synthetics/Myths.aspx