OEM Fluids vs. Non-OEM Fluids
#16
Well that Porsche parts guy should be shot. In going on 7 years doing my own service on 996s, I've never had issues getting accurate info from a Porsche dealer's service counter.
Not knowing a thing about Shell Transaxle 75W90, I'd read all the codes on the bottle and make sure they match the requirements in your owner's manual. In the future you really want to follow the advice of rennlisters. If you can't access the proper fluids locally, contact Pelican, Lufteknic or other OEM vender.
Mike
Not knowing a thing about Shell Transaxle 75W90, I'd read all the codes on the bottle and make sure they match the requirements in your owner's manual. In the future you really want to follow the advice of rennlisters. If you can't access the proper fluids locally, contact Pelican, Lufteknic or other OEM vender.
Mike
"Factory approved transmission oil. SAE 75W-90, comes in 1 liter size. Fits most late model cars, always consult your owners manual to verify compatibility before using any fluid."
I did some online searches about PTX and Shell transaxle 75-90, and reading that either is ok. Hopefully that is correct.
#18
Porsche AG has several 75 W 90 lubricants in their parts system. They don't contain the same chemicals, such as inhibitors for copper corrosion.
As of the 2010 PET the Mobilube PTX 75 W 90 is still the only lubricant specified for the 996-997 GT3 and several other models.
000 043 204 20 Mobilube PTX 75 W 90, in a 20 liter container
000 043 204 20L Mobilube PTX 75 W 90, now available in liter amounts from Suncoast Porsche according to their website. I cannot find this part number in the PET. I assume they are using new one gallon containers, made their own simple label, and can make customers happy selling them enough to do the lubricant change (taking the 3.3 liters or so out of the 20 liter container).
Last edited by enthusiast; 01-29-2013 at 12:44 AM.
#19
I've been able to get the dealer to sell my "x" number of liters from the 20L drum if I bring a container. But this was some time back. I have completely moved over to Delvac for all my GT1 cars (6GT3, Turbo, 7GT3).
#20
What chart and author? Porsche AG does make changes to recommended lubricants, just need proof.
Porsche AG has several 75 W 90 lubricants in their parts system. They don't contain the same chemicals, such as inhibitors for copper corrosion.
As of the 2010 PET the Mobilube PTX 75 W 90 is still the only lubricant specified for the 996-997 GT3 and several other models.
000 043 204 20 Mobilube PTX 75 W 90, in a 20 liter container
000 043 204 20L Mobilube PTX 75 W 90, now available in a one liter container from Suncoast Porsche according to their website. I cannot find this part number in the PET.
Porsche AG has several 75 W 90 lubricants in their parts system. They don't contain the same chemicals, such as inhibitors for copper corrosion.
As of the 2010 PET the Mobilube PTX 75 W 90 is still the only lubricant specified for the 996-997 GT3 and several other models.
000 043 204 20 Mobilube PTX 75 W 90, in a 20 liter container
000 043 204 20L Mobilube PTX 75 W 90, now available in a one liter container from Suncoast Porsche according to their website. I cannot find this part number in the PET.
Last edited by BuckeyeDrew; 01-28-2013 at 07:26 PM.
#21
We stay with the oem for evething but the brake fluid. I also send my oil off to be analyzed at each change to monitor the levels and any buildup from wear. We use Blackstone on al the cars.
http://www.blackstone-labs.com/what-is-oil-analysis.php
http://www.blackstone-labs.com/what-is-oil-analysis.php
#22
Just wanted to update. I was able to get some of the services done yesterday:
air and cabin filter
plugs and coil packs
trans/diff fluid
(will do brake, coolant fluid, and fuel filter in the next few weeks as I ran out of time)
I was only able to drive the car normally last night due to rain, but so far the shifts feel the same with the new Shell fluid. I am not sure which fluid was previously used.
I also installed a splitter and cargraphic mufflers.
This was my first attempt at DIY maint.. And it really was not too difficult. Very glad i did it. I would say the most important detail was having access to a lift.
air and cabin filter
plugs and coil packs
trans/diff fluid
(will do brake, coolant fluid, and fuel filter in the next few weeks as I ran out of time)
I was only able to drive the car normally last night due to rain, but so far the shifts feel the same with the new Shell fluid. I am not sure which fluid was previously used.
I also installed a splitter and cargraphic mufflers.
This was my first attempt at DIY maint.. And it really was not too difficult. Very glad i did it. I would say the most important detail was having access to a lift.
#23
It was actually a fluids manual a guy at the local (to me) NAPA had is his large binder on the counter. I specifically asked for the specs on both for compatibility and he showed me both specs. This was NOT a Porsche document but a lubricant compatibility catalog. Never seen one before, but I'll try to get the name of it the next time I'm in there, probably later this week.
What chart and author? Porsche AG does make changes to recommended lubricants, just need proof.
Porsche AG has several 75 W 90 lubricants in their parts system. They don't contain the same chemicals, such as inhibitors for copper corrosion.
As of the 2010 PET the Mobilube PTX 75 W 90 is still the only lubricant specified for the 996-997 GT3 and several other models.
000 043 204 20 Mobilube PTX 75 W 90, in a 20 liter container
000 043 204 20L Mobilube PTX 75 W 90, now available in a one liter container from Suncoast Porsche according to their website. I cannot find this part number in the PET.
Porsche AG has several 75 W 90 lubricants in their parts system. They don't contain the same chemicals, such as inhibitors for copper corrosion.
As of the 2010 PET the Mobilube PTX 75 W 90 is still the only lubricant specified for the 996-997 GT3 and several other models.
000 043 204 20 Mobilube PTX 75 W 90, in a 20 liter container
000 043 204 20L Mobilube PTX 75 W 90, now available in a one liter container from Suncoast Porsche according to their website. I cannot find this part number in the PET.
#24
The dealer I got the shell transaxle from was Sunset Porsche in Beaverton Or. The parts "dude" said this was the reccomended fluid for 996 GT3 and the only fluid they sell. As I recall, it took him a few extra minutes to confirm this fluid as if he was double checking his info.
I believe what you said but the parts guy is wrong. I have purchased Mobilube PTX 75 W 90 from Sunset Porsche and another Porsche dealership.
I think the dealers just hate to deal with that darn 20 liter container when they can cheat and sell you the other 75 W 90 stuff that comes in one liter/quart container. If they are doing the change in the service department it is easer for the tech to grab three one quart containers than measuring out 3 liters of the correct oil from the 20 liter container. This practice becomes a habit and then that is what the parts guy tells you, because their service department does it so often. It is also much easier to sell a retail customer the three quarts at around $100 than the correct lubricant in bulk at about $550. As 'LVDell' and I have said some dealerships will sell you x liters of the Mobilube PTX out of their 20 liter container.
Regardless, the dealerships didn't design the transaxle, so they need to follow the Porsche engineers' specs.
Last edited by enthusiast; 01-29-2013 at 01:09 AM.
#25
It was actually a fluids manual a guy at the local (to me) NAPA had is his large binder on the counter. I specifically asked for the specs on both for compatibility and he showed me both specs. This was NOT a Porsche document but a lubricant compatibility catalog. Never seen one before, but I'll try to get the name of it the next time I'm in there, probably later this week.
Not acceptable unless it comes from Porsche AG.
#26
We stay with the oem for evething but the brake fluid. I also send my oil off to be analyzed at each change to monitor the levels and any buildup from wear. We use Blackstone on al the cars.
http://www.blackstone-labs.com/what-is-oil-analysis.php
http://www.blackstone-labs.com/what-is-oil-analysis.php
#27
In the matter of acceptable trans/diff fluid, I presented Matt at GT Gears the following question:
I am a member on Rennlist and have read several threads about the GT3 LSD. Since you are regarded as the guru to rebuild these I figured you would be able to answer this simple question I have: Do I need to use the factory mobilube ptx 75-90 (which porsche tells me is now made by shell) for the trans and diff or is there a suitable alternative (such as liqui moly 75-90 synthetic or motul 75-90 synthetic or royal purple 75-90 synthetic).
And his response:
Any of the oils you mention will be fine. With a car that is tracked, changing the gear oil frequently tends to be more important than the particular oil. 4-6 track days max and then change it.
I was able to drive the car today as it was dry. And I did not notice any difference in the transmission/drivetrain with the Shell Transaxle gear oil.
I am a member on Rennlist and have read several threads about the GT3 LSD. Since you are regarded as the guru to rebuild these I figured you would be able to answer this simple question I have: Do I need to use the factory mobilube ptx 75-90 (which porsche tells me is now made by shell) for the trans and diff or is there a suitable alternative (such as liqui moly 75-90 synthetic or motul 75-90 synthetic or royal purple 75-90 synthetic).
And his response:
Any of the oils you mention will be fine. With a car that is tracked, changing the gear oil frequently tends to be more important than the particular oil. 4-6 track days max and then change it.
I was able to drive the car today as it was dry. And I did not notice any difference in the transmission/drivetrain with the Shell Transaxle gear oil.
#28
This is ALL that matters to me:
[QUOTE=BuckeyeDrew;10188395]
And his response:
Any of the oils you mention will be fine. With a car that is tracked, changing the gear oil frequently tends to be more important than the particular oil. 4-6 track days max and then change it.
QUOTE]
'Nuff said.
[QUOTE=BuckeyeDrew;10188395]
And his response:
Any of the oils you mention will be fine. With a car that is tracked, changing the gear oil frequently tends to be more important than the particular oil. 4-6 track days max and then change it.
QUOTE]
'Nuff said.
#29
FYI,
I had a parts guy at a dealership that I trust implicitly recently tell me that Porsche is in the process of superceding the PTX into the Shell oil. While I doubt Mobil will stop making it anytime soon, don't be surprised if dealers who have traditionally stocked the PTX under a factory part number stock out and cannot get it for you anymore.
Regards,
Matt
I had a parts guy at a dealership that I trust implicitly recently tell me that Porsche is in the process of superceding the PTX into the Shell oil. While I doubt Mobil will stop making it anytime soon, don't be surprised if dealers who have traditionally stocked the PTX under a factory part number stock out and cannot get it for you anymore.
Regards,
Matt