Just ordered me some DT40

[10/10ths]

......I'm bored tonight, so I'll post more and keep this baby rolling.


Like I posted earlier, FWIW, I bought my 2004 Boxster S used, with 25,000 miles on her. I have no idea what oil the previous owner used. I have all of her service records, however, and she had EVERYTHING done at a Porsche dealership. So, I guess she was filled with Mobil 1.

I found the car in Chattanooga and drove her to my Louisiana home.

I immediately shipped the car to Jake at Flat 6 Innovations for the "IMS Solution" and other preventative maintenance.

I got the car back and she was filled with DT40.

I've put 13,500 miles on her since switching to DT40.

She went 5,000 miles, dropping only ONE quart on a vacation drive to Colorado with LOTS of WFO throttle up mountain passes crossing 10,000 feet multiple times.

The car is super strong, and the rings appear pretty freaking oil tight.

So, that's my experience, FWIW, YMMV, Yada, Yada..........

[Flavor 987S]

Originally Posted by 10/10ths

...

Great picture! I love driving in CO. I drove my very first Porsche in CO back in about 2004. An Artic Silver Boxster just like yours. Been Porsche hooked since. I plan to drive my 911 in CO in mid-2017 on my way home from Porsche Parade Salt Lake City.

[Flavor 987S]

Originally Posted by JFP in PA

using the DT40, myself included,

Can you please post your most recent UOA from your car on the DT40? Thanks.

[JFP in PA]

Originally Posted by Flavor 987S

Can you please post your most recent UOA from your car on the DT40? Thanks.

I tend to go to great lengths to stay out of oil threads, as they usually lead to lead to arguments rather than resolution.

At the moment, I am not at my shop, so I do not have access to our data files; and as we live in a litigious society, and I happen to do business in a litigious state, I cannot publish any UOA's without the owner's written permission as they own the results, not my shop.

That said, Jake answered many specific questions about various UOA results on DT40 in a very long post over on Rennlist late last year that covered not only test results, but variations in testing labs data qualtiy, and even the impact of "cross pollination (not doing a flush before using DT40) Makes interesting reading: UOA with DT40 and a question or two. - Rennlist Discussion Forums

And, as I am sure you will note in reading his posts, nothing much got resolved there either.

[Flavor 987S]

Originally Posted by JFP in PA

I tend to go to great lengths to stay out of oil threads, as they usually lead to lead to arguments rather than resolution.

At the moment, I am not at my shop, so I do not have access to our data files; and as we live in a litigious society, and I happen to do business in a litigious state, I cannot publish any UOA's without the owner's written permission as they own the results, not my shop.

That said, Jake answered many specific questions about various UOA results on DT40 in a very long post over on Rennlist late last year that covered not only test results, but variations in testing labs data qualtiy, and even the impact of "cross pollination (not doing a flush before using DT40) Makes interesting reading: UOA with DT40 and a question or two. - Rennlist Discussion Forums

And, as I am sure you will note in reading his posts, nothing much got resolved there either.

I think you misunderstand my question. I'm only asking to see YOUR recent UOA. Not some random customer of your shop.

[JFP in PA]

Originally Posted by Flavor 987S

I think you misunderstand my question. I'm only asking to see YOUR recent UOA. Not some random customer of your shop.

And as I noted above, I am not currently at my shop, and will not be for the next several days, so I cannot access that information. But to keep the dialog moving, I did provide a link to similar information.

[morgal48]

Received an email from LN advising that if one buys a case of DT40 they will provide free oil analysis with that purchase. If analyzing your oil is in your future, this lowers the price of the DT40 a bit.

[steved0x]

If I was just street driving in my Boxster, I would buy the Castrol 0W40 from Walmart and change it every 5,000 miles or every 6 months - I really like Castrol and run it in all my other vehicles.

[dghii]

Gotta love oil threads!

[JayG]

I fat fingered the quote, sorry
fixed it

The point I was making is them saying you would get a 40% reduction in HP if you didn't flush first if certain oils were in there because the ring seals would leak

sounds like BS to me.
Of course, I could be wrong

BTW, on LN website they say
"LN Engineering, aside from offering many products and services for both aircooled and watercooled Porsche models, devotes considerable resources to continued research and development, and most recently, partnering with Raby Engine Development again to develop Porsche-model specific lubricants.*"
"*For Porsche approved lubricant we use and recommend Motul 8100 X-Cess 5w40."

See for yourself
http://lnengineering.com/products/lubricants/joe-gibbs-racing-dt40-full-synthetic-5w40-european-sports-car-oil-12-quarts.html

and further
WHICH MOTOR OIL DO I (CHARLES NAVARRO) USE?
For cars under warranty, we use primarily Motul 8100 X-Cess 5w40, which is still a mid-SAPS oil with higher Zn and P levels than the low or no-SAPS oils favored by manufacturers for emissions system protection. Both used oil analysis and physical engine teardowns have proven this lubricant to be a superior choice to Mobil 1. Although we are still fans of Brad Penn, outside of warranty, we recommend Joe Gibbs Racing lubricants due to how closely they have worked with Flat 6 Innovations and us in developing their oils for use in Porsche models.

http://lnengineering.com/resources/2014/02/28/frequently-asked-questions-about-motor-oils/

[Chuck W.]

Below is a copy of my Blackstone report for the last six years on the Boxster. I switched to DT40 in of January 2014 after 13 years of using Mobil One so the last two results are based on DT40 usage. However, I did not flush prior to the first fill.

[Coaster]

I've used DT40 since I bought my car at 90K. Didn't do a flush because I was told the base oil between the Mobil 1 and the DT40 is the same. I drive about 70+ miles a day, a signifigant potion of that time at 80+ mph on a toll road.

[fanguy]

Thank you, Sir you are a gentleman

[steved0x]

Here is my latest report from this spring. The first report on this sheet was from a fill of Castrol Edge 5W40 (previous to that Mobil 1 0W40 but I didn't do any reports on that) and all subsequent reports were on DT40 fills, with no flush between the Castrol Edge 5W40 and the DT40.

This was mostly track driving (note that DT40 is not intended for the track, they recommend XP9 but it only has a 750 mile drain interval and that doesn't work for me since I drive to the track) toward the last with street driving to and from the track and autocross. I am using Millers Nano now and will post a UOA when I get it. Although I think Millers is Ester based so I'm not sure if I will have any issues as described when mixing Ester and non ester based oils without a flush. I'm thinking about going to Mobil 1 5W50 when I run out of the Millers (I have 11 more liters...) after doing a cheap flush with Mobil 1 0W40. But this next UOA may change my mind. I paid extra to get the TBN on one of the fills of DT40 and it had plenty left.

[JayG]

Try Motul 8100 Xcess 5w-50 when you run out of Millers
It runs around $125 on amazon shipped for 20 liters
Much better high temp spec than M1 and at worst comparable to DT40 in specs