after reading though this and a few others threads on synthetic oils for a 2018 5.7 hemi in cold Pa. east coast area, it would be best to run 5w-30 or a 50/50 mix of 5w-20 & 5w-30 in winter? Would you recommend going with red line oil right from the start. I am still in break in with under 1000 miles but plan on doing an oil change at or before 3000 for the first change. Will also be going with the royal purple filter since it has been so highly recommended. I would like to combat the hemi tic right from the start. My last hemi had it around 125k but was not so hard to control with the right oil.
Fwiw , this is just what I would do .
****Edit*****
#1 install an oil catch can ..
Then :
1 drain factory fill at about 2k
2 pour in PYB 5W-30wt at 3k intervals twice
3 then straight 5W-30 Redline for then on out unless something better comes along.
All of these above are using the RP10-48 or the larger RP 20-820 .
Just my recommendation , I'd run 2 or more short oci's on PYB 30 wt just to aid in getting some of the higher wear in metals out prior to pouring in a more expensive Redline .
If cost is not an issue then drain out the FF at 2k then go straight to Redline 5W-30 at 4k intervals until about 30k total miles when most wear in metals are out then start doing UOAS with RL 5W-30 at 6-8 k intervals.
Hope this helps !
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