Penn Grade 1: formulation change?

I just read a thread somewhere that Penn Grade 1(formerly Brad Penn) change its formulation to lower levels of ZDDP; anyone here heard of this change?

Found this on the web.

https://penngrade1.com/performance-p...nal-green-oil/

As seen on the Bird on 7/26/2019:

Quote:

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Originally Posted by Bill Verburg

There have definitely been formulation changes in some oils over the last 10 yrs.

LN Engineering puts out an informative series of updates on this topic

here is the latest detailing changes in Brad Penn and VR1

LN is recommending the newest line of Driven oils, specifically Driven GP-1 20w-50 or 15w-40 for the aircooled cars

I see no change in M1 15w-50 and will continue to use it in my cars.

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