Currently my 410 Mile 2011 GT500 has the Factory Fill, I added the Red Line ZDDP Engine Oil Additive (Zinc & Phosphorus). Swear that smell of hot metal is gone after running the car in Traffic & I have noticed a significant reduction in heat. When I pop the hood after driving a while I can notice a difference in heat.
I believe the "smell of hot metal" on a new car is due to paints and oils curing/burning off the exterior of components. If you can smell your rod bearings "burning" in traffic you are in deep doo doo!
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