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I am all for early oil changes, but sub 5K miles? Can we really learn anything from 3 or 4K oil changes? If you do a change at 3K and the metals are high... DUCK!!! I suspect more valuable information is obtained from 5K or greater changes no?
Peace
Bruce in Philly (now Atlanta)
I get my oil changed once a year, which is under 3000 miles.
Hey, out of curiosity has LN been having any issues acquiring Driven oils and specifically DI40? It says unavailable on Driven's website now and many of the places that sell it actually ship it direct from Driven. I ordered another 5 quarts for my grocery-getter Audi Q5 2.0T from a large well known distributor last week and it took them almost an entire week just to get it -- I was surprised. I am sitting on a ton of this oil so not worried but if there are supply issues it could be a pain for someone that wants to do an oil change like my father who just buys as he goes (I have in fact told my father to run this oil). I tried calling over to Driven this morning since they opened to get their take an for the entire morning no one answers the phone. Maybe I have been working on a trading desk too long but I just cannot believe that a business seeking to do business doesn't answer their phones.........all morning.
TYVM as always. You and Jake have made this platform better in so many ways.
I was able to contact Driven so I can answer my own question: Yes, Driven has been running out of DI40 so it's not a bad idea to keep extra on hand which is what I am going to tell my father to do. They said they should have more in a few weeks but worth knowing. Several of the re-sellers may have it in stock, including LN and others, and it all should be less than ~6 months old (you can keep oil for 5+ years so long as you don't break the seal and let it oxidize, etc) however I also noticed that several of the re-sellers are out of it now too. Possibly they are the ones that ship direct from Driven since Driven told me they actually have 300 quarts in the warehouse but they are already "allocated".
Originally Posted by Bruce In Philly
2009 C2S 188K miles
I am all for early oil changes, but sub 5K miles? Can we really learn anything from 3 or 4K oil changes? If you do a change at 3K and the metals are high... DUCK!!! I suspect more valuable information is obtained from 5K or greater changes no?
Peace
Bruce in Philly (now Atlanta)
In the SpeeDiagnostix reports you can see that the data is "normalized" ... it is wear metals per 1,000 miles.
Ceratec does have some Moly in it but not to the levels that some others do. Given my good numbers, it appears to not matter that the Moly is lower than others and then there is Ceratec's ceramic content that supposedly does some good. Anyone know how their ceramic stuff would show up in these numbers if at all?
So...Given these good reports, I wonder what my bearing journals look like? Anyone? Could you see any wear in an engine like mine? Something I never understood about oil, was that it is supposed to be a barrier between metal parts. If so and you are doing oil changes etc... then there should never be any wear... like forever.
So...Given these good reports, I wonder what my bearing journals look like? Anyone? Could you see any wear in an engine like mine? Something I never understood about oil, was that it is supposed to be a barrier between metal parts. If so and you are doing oil changes etc... then there should never be any wear... like forever.
Peace
Bruce in Philly (now Atlanta)
There is wear, it's just well controlled wear when the oil is doing it's job. That's where the 8 ppm of iron come from and the 2 ppm of copper (could also be some light valve guide wear). As long as the numbers are single digits at about 5k mile oil changes, the engine will last hundreds of thousands of miles with respect to those components.
Latest report, first after transitioning to Driven DT40. This was a longer run than last time mileage wise. Aluminum and copper do seem a bit high, but I submit to the experts here for thoughts.
I’m terrified of bore scoring so trying to stay very much on top of things. On Driven DT40, oil filter magnet, magnetic drain plug, religious about warm up procedure, etc.
Latest report, first after transitioning to Driven DT40. This was a longer run than last time mileage wise. Aluminum and copper do seem a bit high, but I submit to the experts here for thoughts.
I’m terrified of bore scoring so trying to stay very much on top of things. On Driven DT40, oil filter magnet, magnetic drain plug, religious about warm up procedure, etc.
With an increase in silicon, how new is your air filter? Increased dirt getting in can result in increased metal wear numbers.
When you switch oils, you can't really tell much until the 2nd analysis so let's see what the tens looks like then.
Here is my third report with low milage and long duration between oil changes. I switched to Castrol Edge Euro for a track day since the DT40 isn't ideal for track days. I'm not sure if Castrol was a good choice but I went back to DT40 this month. My Ti level went up but my iron and copper went down.
With an increase in silicon, how new is your air filter? Increased dirt getting in can result in increased metal wear numbers.
When you switch oils, you can't really tell much until the 2nd analysis so let's see what the tens looks like then.
Air filter was replaced about 3,800 miles and 15 months ago. Went from stock panel filter to BMC at the same time I ditched the Helmholtz resonator with a new silicon hose.
Here is my third report with low milage and long duration between oil changes. I switched to Castrol Edge Euro for a track day since the DT40 isn't ideal for track days. I'm not sure if Castrol was a good choice but I went back to DT40 this month. My Ti level went up but my iron and copper went down.
DT40 is doing a better job than what was.in there for the first 2 samples, especially on the bearings. Had Castrol turn to water on me in a Saab turbo in the early 90s and watched the oil pressure nose dive, even at speed. Never used it in another engine since.
Unless I am missing something, Castrol Edge Euro would not be better than Driven DT40 for a track day. Technically the best would be to run a fresh fill of race oil for the event and then change it after. If you ran a street oil like DT40 for the event, say because you wanted to save oil costs, it would still be one of the best performing street oils you could run on the track.
DT40 is doing a better job than what was.in there for the first 2 samples, especially on the bearings. Had Castrol turn to water on me in a Saab turbo in the early 90s and watched the oil pressure nose dive, even at speed. Never used it in another engine since.
Originally Posted by silver_tt
Unless I am missing something, Castrol Edge Euro would not be better than Driven DT40 for a track day. Technically the best would be to run a fresh fill of race oil for the event and then change it after. If you ran a street oil like DT40 for the event, say because you wanted to save oil costs, it would still be one of the best performing street oils you could run on the track.
The Castrol Edge was a last minute mistake after I was unable to find some Motul as my first option. I was going to keep the DT40 for the HDPE since I didn't have that many miles clocked on the oil. Then I read here that DT40 is not a track oil and did a last minute panic buy.
03-25-2023, 02:26 AM
