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Mobil 1 0w-40 had a decent zddp content a few years back and was listed as the factory fill on both my 6.1 and 392 SRT’s. Not sure if they have dialed it back in the last few years.

I like Mobil 1 and use it in 2 of my 3 late model hemis. My 2005 5.7 gets 5w-20 and the 2006 6.1 gets 0w-40. They both have over 100k miles on them and run like new.

Yes, many run fine with cracked heads, some don’t. With a magnum you still have a shortblock based off the poly 318 with 2 bolt mains and heads that flow nowhere near a late model Hemi. The basic 5.7 Hemi comes with cross bolted mains, great flowing heads, better factory machining, better...

Oh yeah, owned a few of the late 80’s dodge/Shelby turbo charged 2.2L and went through at least a half dozen head gaskets and replacement cylinder heads.

This is very true. Would be nice if the airflow was similar to the Gen 3 Hemi.

The main issue with the magnum series is cracked heads.

The dropped valve seat is most common in the early 5.7 hemis (2003-2008 pre-eagle) and typically occurs when the motor overheats and the aluminum head expands. I have 90k miles on my 05 5.7 Hemi ram, 140k on my 06 6.1 Hemi Charger, 47k on my 11 6.4 Hemi challenger and 21k on my 17 6.2 hellcat...

I believe the SRT 6.4 block is painted hemi orange, truck blocks black. At least that's how mine are painted from the factory.