|Quote, originally posted by PanEuropean »|
I hear what you are saying, but I'm not entirely sure that you are hearing what I am saying.
There's a lot of topics to cover...I'm not going to get them all, it would make for a post that was too large at one time.
There have been a lot very good points in this entire seal maintenance conversation, and I'm sure many people are following with this topic with great interest, so I'm going to start off with the observation that it would be in everyones best interest to accelerate the process of finding out out exactly what grade of Krytox is in the G 052 172 A1 bottle (for those who still need convincing)...however since the MSDS sheet does not reference an exact DuPont number, it may not be possible to produce a "holy grail" document concretely linking G 052 172 A1 to a specific viscosity (for example) GPL-105. So everyone interested in this topic is going to have to eventually ask themselves how much convincing they individually need.
I am still very passionate about providing information about purchasing from an alternate source, simply because of the enormous cost difference. Competition keeps people honest. A ½ KG jug of liquid Krytox is $155, which is more than 8X the quantity of Krytox in Volkswagens G 052 175 A1 which costs $95.
Based on use of one 30Ml bottle per year, you can currently buy an 8+ year supply for $155 if you can do without the Volkswagen bottle, or you'll pay $760 for the VW re-label. That's a $605 difference (actually slightly more), and a no brainer to me. You'll come out ahead in the middle of the 2nd year.
Now I do understand there's many different varieties of Krytox (71 as you pointed out) but come on, its obvious in the comprehensive list that there's greases (any of the 200 series part numbers), vacuum pump oils, food service numbers, Japan market products...the bulk of those you can instantly ignore, so lets not drag a red herring through the issue and over complicate it.
Krytox oils are 100 series, and "GPL" is for General Propose Lubricants which are the auto industry standard for control of squeaks and rattles (S&R). I keep pointing to this automotive industry specific DuPont news letter which everyone interested should read very carefully because it gives the exact part numbers for the purposes we (and the auto industry in general) are interested in.
It examines the industry standard GPL-105 to thinner viscosity variants GPL-104 and GPL-103, and it appears that DuPont, based on extensive cycle tests, seems to think that there is cause to inform the auto industry that thinner variants might be a better idea because they appear to offer a lower coefficient of friction, particularly as time increases. I'm going to have to hold off on elaborate discussions concerning Krytox viscosity in this post, its a lot and would get far too wordy and off track.
There's always someone who wants to discuss warranty related issues, so I'll quickly touch on that. It appears that there's no recommended Krytox application interval, nor does the owners manual say the Krytox treatments are mandatory. So I think we can relax about what is in reality a liability conversation.
Michael, I understand you are very passionate about Volkswagens, you have an outstanding relationship with your dealer, you have contacts within the corporate structure of VW, you're a moderator on several forums...after all that, you're a strict company man. It would be disingenuous to think that those factors are not skewing your preference and recommendation exclusively toward the VW labeled bottle. I also understand that there's going to be people who will not rest unless they have the exact VW bottle that is pointed to in the owners manual. In those cases, you will be the people buying your Krytox at the VW parts counter.
In my case, I'm completely confident that my Krytox from a 3rd party vendor that costs a little over $19 an ounce is going to offer the exact same performance characteristics as your Krytox for $95 an ounce.
The reason I re-posted the MSDS picture up several posts above is to clearly show that the contents of the VW bottle is NOT some proprietary mixture of Krytox plus mystery additives for Volkswagens exclusive use on retractable hardtops...VW part number G 052 175 A1 existed long before the Eos, and its simply Krytox in oil form. Its NOT an Eos specific chemical, and I think its important to remember that.
So now we have both approaches up for people to examine and they can pick what they feel comfortable with.
Modified by WolfsburgerMitFries at 1:25 PM 2-24-2007