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Forum: Performance and Technical Chat 09-01-2022, 12:51 PM
Replies: 14
Views: 1,931
Posted By JFP in PA
Porsche has always set the specs for their manual...

Porsche has always set the specs for their manual gear box oil independently of what is available on the street for general usage. Years ago, I contacted Mobil 1, Castrol, and others about suitable...
Forum: Performance and Technical Chat 09-01-2022, 11:15 AM
Replies: 14
Views: 1,931
Posted By JFP in PA
Yes, the five-speed oil is unique to that...

Yes, the five-speed oil is unique to that transmission, and only when it is in a Porsche because Porsche used some custom alloy in the synchro rings that were not used in the same gear box in other...
Forum: Performance and Technical Chat 06-30-2022, 08:13 AM
Replies: 14
Views: 1,931
Posted By JFP in PA
Over the years, Wayne published several "sub...

Over the years, Wayne published several "sub optimal" ideas, such as using set screws to secure the IMS shaft while doing a retrofit; not everything was off kilter, but some were real...
Forum: Performance and Technical Chat 06-27-2022, 05:50 AM
Replies: 14
Views: 1,931
Posted By JFP in PA
A retired Porsche engineer told me it is because...

A retired Porsche engineer told me it is because the transmission used in the Boxster has synchro rings made from an unusual alloy that are not used in the gear box when it is in other applications. ...
Forum: Performance and Technical Chat 06-26-2022, 08:14 AM
Replies: 14
Views: 1,931
Posted By JFP in PA
Just to put his comment in context, the fluid...

Just to put his comment in context, the fluid which is made for Porsche does not have a GL rating of any kind; a small division of Royal Dutch Shell (Burhma) makes it to Porsche specs, so it...
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