Originally Posted By: edyvw
If that was my car I would do UOA at 3K first to see TBN retention. That is based on my UOA using VW504.00/507.00
If youw ere in California, I would say you could do 5-7.5K, but TX, do 3K first.
Roger, will do. Gonna sample the stock factory fill shortly (at 4500...