Ok gang, I aggregated select, published motor oil data from HPL and Red Line individual viscosity grade data sheets. Recall they state these are "typical" properties, without a stated tolerance band (proprietary quality control, undoubetdly).
You'll see some strange non-trends in the data. Sorry the background turned out murky - my png picture file has white background - don't know what the forum software does to it.
My high-level conclusion is that only HPL Super Car motor oil compares to Red Line High Performance Oil. HPL Performance Plus may be "good enough" for Hemi's as well, since all HPL oils are heavily spiked with additives, according to a BITOG report.
Have at it:
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