Octane requirements

TT5.9mag said
The magnums (5.2, 5.9) came in big heavy trucks and SUVs and ran just fine on 87 octane. But they had long slow advance curves and knock sensors that were very active. If you’ve played with the timing at all and added a performance style curve you may find that it rattles at 9:1 with iron heads and 87 octane. But you won’t know until you test. The answer to test each fuel and use the lowest octane that the engine doesn’t rattle on is the correct answer.

I ran the Hell outta my 2nd owner 02 Ram, last year of the 5.9. When my Bro bought it, they had to call the Owner of Jerry Ulm Dodge in Tampa. Cause he was rolling it! It was an 85k truck new... death by Advance Auto hub bearing (China).... could killed some people! Anyways, I Ran the Crap out of that 5.9, in the 4 Dr, For YEARS, good ol cheap *** 87 pump gas