Joined: Sat Aug 19 2006, 05:03PM
Location: Ontario, Canada
Posts: 2919
451 running Rotella 15w40 plus 1/4 bottle of Lucas TB Zinc Plus additive. High volume pump with standard pressure regulator spring. I also run a windage tray and fill the crankcase with 6L oil instead of 5L.
418" small block stroker. 7 qt pan. w/ 6 qts. of oil with a std. volume pump. Lot's of internal oiling mods for less windage etc. and never had the oil pressure dip even after 6,800 rpm blasts. Ran Castrol GTX 10/40 and AC Delco zinc additive for break ins and have Mobil1 in all the vehicles i own.
Not as critical with zinc but still a good idea.I like to run as thin oil as possible unless bearing clearances dictate otherwise. Castrol 5w30 or 10w30 has always worked well for me.Mobil one 15w50 has high zinc content for those needine a thicker oil if I remember reading that correctly from an oil article.