Inverted g96.01 oil capacity?

[beeman]

Does anyone know if the inverted g96.01 gearbox has the same oil capacity as the standard box (just under 3qt)?

[beeman]

Spoke with my transaxle supplier, CMS. Recommend filling to the level of the center of the CV joint, or a hair below. He said about 1.5" below fill plug. Recommended a synthetic 75-90 GL-5, they like Motul gear 300...he was thinking about 6qt... Dang it, 3 qts Porsche fluid arriving FedEx today...

https://images-na.ssl-images-amazon.com/images/I/81dOEtylokL._AC_SL1500_.jpg

[jamesfr58]

Beeman

You were not for off according to the specifications below. They had the capacity at 2.7 liters which is equivalent to 2.853 quarts so I just put in three quarts. My transmission builder who added the limited slip and changed the final gearing also stated to add 3 quarts so not sure how he came up with 6 quarts. He also told me to use synthetic lube, Stan at G-Box when I filled the transaxle. Not sure it this will help but this is what I was told for my G96 so that is what I have done.

PORSCHE 996 C2/C4 TRANSAXLE SPECIFICATIONS

• Type: G96/00 (99-01), G96/01 (02-05)
• Original equipment for: Porsche 996 Carrera 2 (C2)
• Description: H pattern 6 speed manual transaxle with Borg Warner synchromesh and synchronized reverse
• Limited Slip Differential: 40/65 LSD optional equipment
• Weight (approx): 175lbs
• Oil capacity (approx): 2.7L API classification GL5 75/90
• Speedometer: None
• Transmission controls: Shift cables
• Clutch: Hydraulically assisted push style clutch
• 1st gear 3.818
• 2nd gear 2.20
• 3rd gear 1.516
• 4th gear 1.216
• 5th gear 1.024
• 6th gear 0.841
• Final drive 3.444

• Type: G96/30 (99-01), G96/31 (02-05)
• Original equipment for: Porsche 996 Carrera 4 (C4 AWD)
• Description: H pattern 6 speed manual transaxle with Borg Warner synchromesh and synchronized reverse, coupled to front diff via viscous coupler and torque tube
• Limited Slip Differential: Not optional equipment
• Weight (approx): 175lbs
• Oil capacity (approx): 2.7L API classification GL5 75/90
• Speedometer: None
• Transmission controls: Shift cables
• Clutch: Hydraulically assisted push style clutch
• 1st gear 3.818
• 2nd gear 2.20
• 3rd gear 1.516
• 4th gear 1.216
• 5th gear 1.024
• 6th gear 0.841
• Final drive 3.444

[beeman]

That's interesting, James. I think the key is getting it filled to the level of the center of the CV flange. Thanks for the information, you saved me from possibly overfilling it.

I will let you know how much I end up putting in there.

[beeman]

Just filled it with Mobil 1 (available locally). 6 quarts seems right, put me about 1.5" below the fill line, close to the level of the CV flange. James, you better confirm your level before karting.

https://s12.directupload.net/images/200612/t4vvxmhm.jpg

[VRaptor SpeedWorks, LLC]

James....I'm guessing your oil capacities are for the transaxle in it's normal right-side-up configuration. Once you flip it upside-down like we are in the GTM, the oil capacity changes because you're filling the opposite side of the case.

[jamesfr58]

Thanks guys, I thought I had it right but looks like might have bad information and need to insure I have it right. After reading the post and looking at the transmission I can see what you are talking about, when flipped over it raises the location where the axles exit the transmission versus install in the correct orientation. I will check on this again and look like I will be adding around 3 more quarts to get the level to half way up on the axel centerline. Guess it was good think I did post something even if it was wrong, might have saved me and issue without even knowing I had one!!