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Fuels & Lubricants Discussion all about Fuels & Lubricants. synthetic oil, conventional oil, brands, change intervals, diesel grades, gelling and such debated items like that. Non TDI related postings will be moved or removed. This forum is NOT for the discussion of biodiesel and other alternative fuels.

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Old July 2nd, 2008, 17:25   #31
OilGuy
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CJ-4 defines a minimum hurdle. How far (or if) an oil exceeds the minimum hurdle is harder to find data to support.
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Old July 2nd, 2008, 19:06   #32
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Quote:
Originally Posted by OilGuy
CJ-4 defines a minimum hurdle. How far (or if) an oil exceeds the minimum hurdle is harder to find data to support.
can't you just ask the manufacturer?
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Old July 2nd, 2008, 20:08   #33
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Quote:
Originally Posted by Bob_Fout
Based on what criteria? IIRC no single one of them can be used to determine which oil is better. They all meet CJ-4 and are all pretty close in their properties.
No, to clarify, I mean that many of us look at the chart and then need to search for an interpretation of the data. A simple note that helps us compare or interpret the numbers would make the chart more user friendly.
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Old July 2nd, 2008, 20:10   #34
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Quote:
Originally Posted by hskrdu
No, to clarify, I mean that many of us look at the chart and then need to search for an interpretation of the data. A simple note that helps us compare or interpret the numbers would make the chart more user friendly.
Ah, something that explains what the different criteria mean?
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Old July 2nd, 2008, 20:19   #35
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Right, and how to compare the numbers. In other words, when you look at the data, it has immediate value to you. When I look at it, I have to search each item for 20 minutes to figure out what it means, or what value the number holds.
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Old July 5th, 2008, 14:44   #36
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I just pulled an oil sample at 5K on D1 ESP CJ-4, will send in for analysis.

hksrdu I've not forgotten about the labels for ya.
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Old July 6th, 2008, 10:51   #37
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Quote:
Originally Posted by Blue_Hen_TDI
TDT CJ-4 is now available at Pep Boys in quarts for $6.49. Here's a pic of what I bought tonight:
Just saw the 1 gal jug of CJ-4 M1TDT at Wally World yesterday.
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Old July 6th, 2008, 11:28   #38
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Quote:
Originally Posted by hskrdu
Right, and how to compare the numbers. In other words, when you look at the data, it has immediate value to you. When I look at it, I have to search each item for 20 minutes to figure out what it means, or what value the number holds.
I have a little more familiarity with what each property is, and which values are better or worse. None of the oils in that chart are much different from the others, so there is no way to take that data and calculate which oil is best. Some would say that the M1 TDT, with the slightly higher total base number (10.7), makes it the top choice. Since it's already the oil I use, I don't see any reason to change.

Viscosity Index (VI) is a measure of how much the viscosity changes with temperature. Higher is better, but the differences between the best and the worst in this chart aren't terribly significant.
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Old July 6th, 2008, 11:33   #39
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TR, I think he's wanting the definitions of each of the various properties. Pour point, NOACK, ash, etc. etc.
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Old July 6th, 2008, 12:05   #40
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Quote:
Originally Posted by Bob_Fout
TR, I think he's wanting the definitions of each of the various properties. Pour point, NOACK, ash, etc. etc.
He can find that anywhere. The Oil Analyzers website is a good place to start.
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Old August 6th, 2008, 09:38   #41
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VOA results for Mobil Delvac 1 ESP 5W40 (CJ-4)


Not sure if the add pack numbers jive with what we're seeing in the UOA's, i.e. P, Zn, and Mg.
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Old August 6th, 2008, 10:26   #42
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They really thinned it down, 13 vis. Are you going to use this oil in the passat or one of the Jetta's.
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~ USED OIL ANALYSIS ~ http://forums.tdiclub.com/showthread.php?t=190958
~
1.9 PD Jetta V ~ pkg 1 ~
DSG ~ 17" VV ~ 36/34 psi ~
ULSD ~ DG-BP90 - speed 39.2
hwy/city 83% / 17% ~
elev 58 ft / temp 72 F / humidity 76% ~ MPG 48.3 / 42.8 / 35.6

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Old August 6th, 2008, 12:10   #43
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Quote:
Originally Posted by wjdell
They really thinned it down, 13 vis. Are you going to use this oil in the passat or one of the Jetta's.
It's in the W8. A 13 vis makes it a bit short of a 40 weight... have to see how it holds up. I'll do a 5k mile UOA for sure.

This stuff seems to be all over the map... VOA vis was 13... Bob saw 14 after 5k, Mark is better than 16 after 15k... wth?!

Compare the VOA additive numbers to Bob or Mark's UOAs, though:
http://forums.tdiclub.com/showpost.p...&postcount=641
http://www.bobistheoilguy.com/forums...47#Post1206647
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Last edited by fitzski; August 6th, 2008 at 12:12.
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Old August 6th, 2008, 18:13   #44
wjdell
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Maybe its not all over - 13 @ VOA - 14.4 @ 5k and 16 @ 15k. Maybe its by design, we know so little about CJ4 at this point. Or, it is a new oil and maybe the batches are running inconsistant. Mobil will get it worked out in time if it its. As for yours, 13 is closer to what VW wants anyway.
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Post your UOA data in the TDI UOA Database thread
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~ USED OIL ANALYSIS ~ http://forums.tdiclub.com/showthread.php?t=190958
~
1.9 PD Jetta V ~ pkg 1 ~
DSG ~ 17" VV ~ 36/34 psi ~
ULSD ~ DG-BP90 - speed 39.2
hwy/city 83% / 17% ~
elev 58 ft / temp 72 F / humidity 76% ~ MPG 48.3 / 42.8 / 35.6

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Old August 6th, 2008, 19:58   #45
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Were clearly missing the forest for the trees here.



I mean - It's the official motor oil of NASCAR! What more do we need???
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