Ticking 2007 5.7 Hemi

I used 5W-30 on all my 5.7 hemi’s that i’ve owned. It doesn’t seem to have any affect on the MDS system and I feel that offers a little bit better lubrication especially in hot weather. My SRT eight 392 called for a 40 weight for what it’s worth. The exhaust manifolds are definitely a problem point though as mentioned above.