I don't think Redline is the cure, I think the Royal Purple Dexos is the cure. Not so much cure as it is absolute prevention because it just seems to not break down like other oils do. I never cared enough to try any other dexos spec brand so not sure if its that or something else about the RP...
Back with the same name, I'm the one who made the post detailing the Redline S-1 + RP Dexos fix based on (I think?) Littleloogy's evidence. Haven't touched my HPFP in 8 years. Cleaned it once with Redline, only RP Dexos Spec since then. Never had a single issue. Multiple corn stations in NY and...