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Discussion Starter #1
Can anyone tell me the weight and quantity of transmission oil required in a 2018 718 Boxster S?

Where is the transmissions filler port?

Thanx!
 

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Manual transmission oil is Mobilube PTX 75W-90. PDK is Pentosin FFL-3. No clue where and how to fill the system properly. I don't think that's a common diy on a Porsche.

Am I assuming correctly that this thread is the continuation of http://www.718forum.com/forum/718-boxster-cayman-issues-problems/12241-mystery-i-need-help-disappearing-oil.html ?

If so I think it's time to let the professionals take a look at your car. Don't drive it. No point in trying to hide what you did now that you already drilled a 1-1/2” hole into the cover panel.
I mean this sincerely and wish you the best of luck that nothing expensive broke...

If this is a joke and or trolling...which I hope for your sake it is. Then: good one!
 

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Just a note here:

The PDK actually uses two types of oil; one is an ATF-like fluid (the FFL-3 above) and the other (I assume) is for the gears/hypoid section of the 'box.
 

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Just a note here:
The PDK actually uses two types of oil; one is an ATF-like fluid (the FFL-3 above) and the other (I assume) is for the gears/hypoid section of the 'box.
I believe with the PDK the Pentosin goes in the clutch and the Mobilube goes in the gears. But I don't plan to do it myself ever so I might be also completely wrong. :laugh:
 

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I believe with the PDK the Pentosin goes in the clutch and the Mobilube goes in the gears.
Yes, that sound correct.

From what I've read the PDK clutch oil is good for 60,000 miles and the gear oil is good for even longer.

In my case, I have 2500 miles on my 2018 Cayman, so I have a while to go before I think about this ;)
 

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Discussion Starter #8
Ah, yes, my apologies. I mistook the tranny drain plug for the engine drain plug, so I drained the tranny and filled the engine. How stoopid!

The bottom of the car is almost completely covered with panels. To even see the engine sump drain, you have to nearly remove a large panel. This isn't true with the tranny drain plug, which is obvious (go figure). When I did so and saw what was going on, I hole-sawed a 1-1/2" hole in the panel for easy future access.

I'm guessing that many dealers do the same thing. In any case, this is a strange quirk or oversight on the factory's part...unless it's part of the "don't encourage customer service" mindset.
 

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Ah, yes, my apologies. I mistook the tranny drain plug for the engine drain plug, so I drained the tranny and filled the engine. How stoopid!

The bottom of the car is almost completely covered with panels. To even see the engine sump drain, you have to nearly remove a large panel. This isn't true with the tranny drain plug, which is obvious (go figure). When I did so and saw what was going on, I hole-sawed a 1-1/2" hole in the panel for easy future access.

I'm guessing that many dealers do the same thing. In any case, this is a strange quirk or oversight on the factory's part...unless it's part of the "don't encourage customer service" mindset.
I don't think a dealer is drilling any holes in that panel. It's supposed to keep dirt out of that area and is part of the underbody aerodynamics of the car. A scheduled oil change includes the filter change, so the panel needs to come off anyway.

I've got two remaining questions if I may. Do have a manual or PDK? Did nothing overflow when you added additional 6 quarts to the engine?
 

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Discussion Starter #10
You don't need to remove any panels to change the filter. There's a knack to it, but it's easy once you get it.

My car has 6-spd. Nothing overflowed.
 
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