Valvoline VR-1 vs. Lucas Hot Rod oil

davescuda said

I thought brad sold and they change their formulas?

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I believe the product line was sold by American Refining Group to 'Penn Grade' around 2018.
As far as changes in the oil, so far the only evidence seems to be a competitor says so.
The current owner says otherwise.
https://penngrade1.com/wp-content/uploads/DA-Lube_White-Paper_FINAL_FINAL.pdf
I got that from Mike Jones post here
Question for Camking - Don Terrill’s Speed-Talk

Whether they are getting the base stock from ARG, maybe not. If its the same product from a different supplier, probably doesn't matter. Source of base can matter, but if its highly refined to a base II or III, maybe not so much. ???
And if its Pennsylvania crude from a different source then its probably very close or the same to begin with.

How much zddp - Page 4 - Don Terrill’s Speed-Talk