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Showing content with the highest reputation on 09/11/2021 in all areas
Porsche has typically used gear oils that are designed to their specifications, particularly in the five speeds because of the synchro ring materials of construction. As the result, the factory fill gear oils lack any API or "G" gradings because they are unique. A lot of the smaller aftermarket suppliers claim they have "equivalent" products, that in reality are not. Over the years, I have lost count of how many gallons of aftermarket gear oils we have drained out of customer cars due to complaints of poor shifting, particularly in the cold, noise, etc. And that includes a lot of Redline, Royal Purple, and Amsoil products. And except for transmissions that had sustained damage while using these aftermarket products, every time we switched the car back to the factory fill, all the customer's issues disappeared. Years ago, we contacted all the major gear oil vendors looking for a true match to the factory gear oils; Mobil 1 summed up best when they told us that "Porsche uses totally unique gear oil formulation requirement's, which are made to their specifications, and which do not match any of our off the shelf offerings. And as Porsche represents such a small segment of the overall market, we will not be attempting to replicate their formulation requirements."1 point
I think you've already answered your question. That oil is not approved for the g86 tranny.1 point