1999 Boxster manual transmission fluid change

[JFP in PA]

Originally Posted by Frodo

Okay, now we're gettin' somewhere.

So, when people say it's best to use the Porsche transmission oil, that it's so much superior to the competition, that would apply equally to both the Mobil and the Shell products?

BTW, I have no axe to grind here...I'm just trying to figure out what's going into my gearbox.

Approved Manual Transmission Oils

000 043 204 20 Mobil (Mobilube PTX) - 20 liter container

000 043 204 19 Shell (Transaxle) - 20 liter container

999 917 546 00 Shell (Transaxle) - 1 liter container

Note: All are full synthetic rated (or "non-conventional processing") oils. These oils have good light running properties because of their light low-temperature viscosity as well as a high level of temperature stability.

[Frodo]

Originally Posted by Frodo

Is this Mobil product the one that is so much better than the other oils out there? The stuff that you, JFP, have had customers drain out other transmission oils to put in?

Looking at this again, I should re-word: Not what "you, JFP, have had customers drain out other transmission oils to put in?"

What I meant to say is what "you JFP, at the request of your customers, have drained out of transmissions to put in?" I'm pretty sure you weren't holding a gun to their heads..

[JFP in PA]

Originally Posted by Frodo

Looking at this again, I should re-word: Not what "you, JFP, have had customers drain out other transmission oils to put in?"

What I meant to say is what "you JFP, at the request of your customers, have drained out of transmissions to put in?" I'm pretty sure you weren't holding a gun to their heads..

Some time we needed to just about strangle customers who insisted that "they read on the internet" this or that oil was perfect for their cars, and then they had noise, hard shifting (particularly when cold), etc. And when we told them it was the oil they used, they insisted we were wrong. By far, the most common gear oils we drained out and replaced with the factory fill (and solved their problems) were Royal Purple, Red Line, and Amsoil.

Years ago, we wrote to all of the major gear oil suppliers looking for an exact match to the OEM oil, and were totally dismayed by their responses, particularly for the five speed products. The "big boys" all told us that the factory fill was a unique product that was only available through Porsche, while the smaller compounders said they had perfect matches. Unfortunately, the "perfect matches" were the products we were draining out of customer's cars and replacing with the OEM fluids.

Sometimes you just have to swallow hard and accept the obvious; there are some unique lubricants out there, and if they are speced for your car, you have to live with it. Currently, we are seeing similar issues with the newer CVT transmissions common in many cars; these things use an unusual ATF that is formulated around the transmission, and sell for $14-18 per quart, and are often only found at the dealers. People that cheap out and use "exact match" aftermarket fluids find themselves with an out of warranty CVT that no longer works at all, and cannot be rebuilt in the field. Nissan, for example, sells replacement units at $2800.00 (shop cost), plus an $800 core charge. So much for saving a few bucks on transmission oil...................

[Gelbster]

The oil issue for the 6 speed has been discussed at length - notably with info from Smallblock454.The general conclusion for both 5 & 6 speed is that anything other than the correct spec is an ill-informed and expensive choice.Following is for 6 six speed only.
2nd gear, hard to shift after tranny oil change
2nd gear issues
Gearbox 8620-1003 for Boxtser S 04/2003

[maytag]

Hey y'all:
I've read enough of these threads now to be convinced that the Genuine Porsche fluid is the way I want to go in the 6-spd trans ('03 S).
However: I'm browsing sites, and where I find it at all, I'm finding "no longer available". Or available only in 20-litre qty.

Can y'all point me to your source for genuine Porsche manual trans fluid?

Thanks in advance

[JFP in PA]

Originally Posted by maytag

Hey y'all:
I've read enough of these threads now to be convinced that the Genuine Porsche fluid is the way I want to go in the 6-spd trans ('03 S).
However: I'm browsing sites, and where I find it at all, I'm finding "no longer available". Or available only in 20-litre qty.

Can y'all point me to your source for genuine Porsche manual trans fluid?

Thanks in advance

Try Sunset Porsche in Beaverton OR.

[maytag]

Originally Posted by JFP in PA

Try Sunset Porsche in Beaverton OR.

thanks JFP, I'll give em a shout on Monday!

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