OilGuy
Veteran Member
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?OilGuy said:CJ-4 defines a minimum hurdle. How far (or if) an oil exceeds the minimum hurdle is harder to find data to support.
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.Bob_Fout said: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.
Ah, something that explains what the different criteria mean?hskrdu said: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.
Just saw the 1 gal jug of CJ-4 M1TDT at Wally World yesterday.Blue_Hen_TDI said:TDT CJ-4 is now available at Pep Boys in quarts for $6.49. Here's a pic of what I bought tonight:
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.hskrdu said: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.
He can find that anywhere. The Oil Analyzers website is a good place to start.Bob_Fout said:TR, I think he's wanting the definitions of each of the various properties. Pour point, NOACK, ash, etc. etc.
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.wjdell said:They really thinned it down, 13 vis. Are you going to use this oil in the passat or one of the Jetta's.
I never knew NASCAR ran CJ-4!aNUT said:Were clearly missing the forest for the trees here.
I mean - It's the official motor oil of NASCAR! What more do we need???
LOL LOL go to Joe Gibbs oil site and read a littleaNUT said:Were clearly missing the forest for the trees here.
I mean - It's the official motor oil of NASCAR! What more do we need???
So, for my vehicles that use a diesel motor oil, does this mean that the change interval should be shortened given that TBN numbers have the potential to be lower? How will this affect vehicles prior to MY2007 which do not specifically require a CJ-4 rated oil? Will CI-4 oils stay on the market, and can these CI-4 oils be used in a newer vehicle to maintain the robust oil change interval?AndyH said:What are the implications of formulating CJ-4 oils with the new chemical restrictions?
Sulfur limit of 0.4% minimizes the possibility to use higher sulfur Group I stocks. Reduction in sulfated ash directly reduces allowable detergent TBN levels that may affect marketing claims and potentially reduced oil drain intervals, assuming all other factors remain the same.
MrMopar said:So, for my vehicles that use a diesel motor oil, does this mean that the change interval should be shortened given that TBN numbers have the potential to be lower? How will this affect vehicles prior to MY2007 which do not specifically require a CJ-4 rated oil? Will CI-4 oils stay on the market, and can these CI-4 oils be used in a newer vehicle to maintain the robust oil change interval?
Note that the spec sheet sets viscosity @ 100C at 14.7; TBN is right on the money (10.1, per specs).wjdell said: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.
Anyone notice Schaeffer lists a range of visco, but the others only list one? Could be the others have a range too, but only put averages on the data sheets?fitzski said:Note that the spec sheet sets viscosity @ 100C at 14.7; TBN is right on the money (10.1, per specs).
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENCVLMOMobil_Delvac_1_ESP_5W-40.asp
These aren't designed to be extended drain interval oils, so you're back to using UOA to set an interval that works for the oil you're using.MrMopar said:So, for my vehicles that use a diesel motor oil, does this mean that the change interval should be shortened given that TBN numbers have the potential to be lower? How will this affect vehicles prior to MY2007 which do not specifically require a CJ-4 rated oil? Will CI-4 oils stay on the market, and can these CI-4 oils be used in a newer vehicle to maintain the robust oil change interval?
Thanks TR! After the D1 ESP runs out I'm gonna try DEO or S9000.TornadoRed said:That is a great-running '03 TDI, Bob.
I know. That's probably due to my nozzles, tune and additives.TornadoRed said:I think it would run great on any good 5w40. The oil you use didn't have anything to do with the low soot numbers.