Quote:
Originally Posted by pal
On a race track in the summer, I have some doubts as oil temps are in the 230-240°F range and the new oil will have lower viscosity. Whether that increases bearing wear (a weak point on this engine), I won't know until I get some Blackstone reports this year.
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The oil will very likely have a slightly lower viscosity, but viscosity alone is not a complete indication of wear protection. Film strength of an oil is not related to viscosity. ZDDP concentrations could be higher in the new EDGE product, an anti-wear additive. Another thing to consider is that the new formula may provide better long-term stability.
The upgrade in API specification indicates that this is a better performing product overall.