can someone give me a link to the correct tool to remove the standard transmission drain plug on a 1999? i googled 16mm triple-square anti-tamper socket but all i can find are male versions not female.
There is no female triple square, that would be a 12 point socket. Triple square by definition means 3 quadrangles for 12 points. There are E sockets that are necessary for some things on these cars such as the seats. You can buy all that stuff cheap at Amazon, Harbor Freight has E sockets but not much in triple square.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.