986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - '99 5 speed trans oil change, why not fill to overflow? why -11mm??

Boxstard · 08-04-2022, 03:22 PM

Input shaft has an oil seal so overfill won’t immediately cause leakage and wet clutch…. But regardless it is specified for reason, and I trust Porsche engineers know how fluid sloshes around when the car is in motion… not logical reason to fill to the plug hole.

Because the 5-spd tranny is from Audi, the hole location was not originally designed for Boxster installation thus the height spec., I guess…. It’s not a big deal to check it, if you can bend and mark a paper clip. Can be done faster than typing up a question here.

08-04-2022, 03:22 PM	#6
Boxstard Registered User Join Date: Apr 2016 Location: SE Michigan Posts: 496	Input shaft has an oil seal so overfill won’t immediately cause leakage and wet clutch…. But regardless it is specified for reason, and I trust Porsche engineers know how fluid sloshes around when the car is in motion… not logical reason to fill to the plug hole. Because the 5-spd tranny is from Audi, the hole location was not originally designed for Boxster installation thus the height spec., I guess…. It’s not a big deal to check it, if you can bend and mark a paper clip. Can be done faster than typing up a question here. __________________ 1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!