[JFP in PA]

Originally Posted by cnavarro

The OEM fill on race cars from the factory used to be (and might still be) Mobil 1 SHC, which was rebranded under their industrial lube name Delvac 1. We've used it for years, when it was only available in 55 gallon drums. I used to even bottle it for customers, until Mobil started offering it in gallon jugs. It's different from the M1 gear lube found at Autozone, etc., and I've used and recommended it for years.

Charles, an interesting response, particularly in light of the fact I had read the same explanation elsewhere and asked our Mobil rep about it some time ago, got a totally confusing answer and then was referred to their “technical group” who responded, “Mobil no longer produces a suitable gear oil for the Porsche transmission. You should consider contacting a Porsche dealer for an appropriate replacement.”

Any thoughts?