Join Date: Oct 2010
Location: "State of Missery"
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FWIW, when I had my '10 R/TC (new to 42k miles), I had occasional start up lifter noise/rattle.
Pennz Ultra was not on the market at the time, and I switched to Castrol Syntec and the SRT filter.
Start up lifter noise was virtually eliminated.
With my present '16 SP, I've been using the 0-40 Pennz Ultra and SRT filter (27k miles on the car now), and have never had the start up lifter noise. Not even one time.
YMMV, but this is my experience with my two Challengers.
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The Past: 2010 Detonator Yellow R/T "Classic" RIP Old Buddy 6/4/15
The Present: 2016 R/T Scat Pack. Factory Options: B5 Blue, 24G Package(A8), WRT Wheels, and Modern R/T Hood Stripe. Engine HP Mods: None Needed. HC Air Box/Tube; DIPs Screen; BT Catch Can; Mopar front Brace;"TA" style side stripes; Mopar '10 Center Caps