Originally Posted By: dustyroads
Originally Posted By: Dak27
Originally Posted By: dustyroads
Originally Posted By: Dak27
I'm guessing Rotella's T5 and Mobil's Delvac Elite semi-syn oils numbers are probably very similar. Judging by the UOA's posted here, the "Big Three's" oils seem to perform similarly, regardless of the slight differences in their formulations.
My hopes are the new CK-4 oils perform as well as the Companies are telling us they will......
The only difference I noticed between the "big 3" 10W30 oils (T5, XLE, & Delvac Elite) is the TBN depletion rate. The Delo XLE was getting a little low in TBN after 22k-25k miles of OTR use. In the same trucks, application and amount of fuel burned, the T5 and Delvac Elite retained better TBN. Otherwise, my uoa's were consistent.
I'm very confident about the new CK-4 oils. The CJ-4 oils made some people nervous and I remember many owner/ops being reluctant to make the switch at the time of their release. As it turned out, not only did they lower the ash levels for the sake of the emissions equipment, but made a better quality oil all around. I look forward to putting some CK-4 in my Detroit.
That's good info regarding your UOA's and their TBN numbers, Dusty.
I sure wish my local Walmart stocked the 10W30 Delvac Elite. I was really happy with how it performed in my Detroit last Winter, and as soon as the temperatures drop, I'm switching over to it again.
How are you liking your DD13?
So far, I'm liking it a lot. Everything is getting "broke in" and the truck is showing potential for great fuel economy.
The DD13 is a whole different animal than your Series 60 (as you know). The torque peak is at 975 rpm (and is supposedly flat out to 1400-1500 rpm) and horsepower peaks at 1625 rpm. I mostly operate it between 975 and 1300 rpm and it does fine, but 1300-1500 rpm works great if I need to maintain the most speed up a mountain.
The Jake is very strong going down the mountains. I don't know the braking power numbers but it holds the truck back nicely. Cummins is probably still the king of engine braking. I just know this DD13 (Jake) works well even at lower rpm's, no need to use the upper end of the range.
Just like the Series 60, the oil is black almost immediately after an oil change. I've only drained the factory fill but the new fill was black soon after it went in. My Volvos maintained clean looking oil for at least the first 10K miles of a new oci.
Even with Detroit's Optimized Idle (which stops/starts the engine as needed to maintain interior temps, voltage and oil temps in the cold), I had huge amount of idle hours this summer. No troubles with the emissions "stuff". It did regen after approximately 6-8 hours of idling, but no problems thus far. My Volvos never gave me a bit of trouble with long idles but it used the engine brake to put a load on the engine and build a little extra exhaust heat (probably why they have some cam failures).
Replaced factory fill with Delvac Elite 10W30 and I think I'll stick with it, but I've also contemplated the Delvac 5W30...I dunno.
Hope all is well for your business.
The DD Series motors are incredible. I ran a DD15 as a company driver. It was governed to 65, and the company had some kind of fuel miser program, but it still pulled really well. You're right about the Cummins jake; they definitely have the best out there. The company had both ISX and DD15's and you certainly could tell the difference. The DD15's was still decent, I'd say the jake in my Series 60 is comparable. I do know when I'm heavy and getting ready to go down a steep grade, I drop a gear or two, just to be safe.
And actually, I just changed companies. I went back to hauling reefer freight(Heavy), and I'm running SO much more than I did with the previous company. So, everything looks very positive at this point.
Be safe out there, and we'll chat again soon.
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