VOA Rotella "T" Syn. 5w-40 CI-4/SH

[RWEST]

Here's a Blackstone VOA for "T" Synthetic CI-4/SH rated 5w-40. I sent a sample of this along with my UOA sample referenced here http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1040280#Post1040280

RON: Nothing too unusual showed up in this sample of virgin Rotella 5W/40 oil. The traces of metals most likely came
from holding tanks and transport pipelines. They are a fairly common find in virgin samples and are not a problem.
Calcium, the dominant additive, is a detergent/dispersant additive, as is boron. Phosphorus and zinc are anti-wear
additives. The TBN read 12.7, which shows the oil is starting out with lots of active additive. We were surprised to find
insolubles at 0.1%. They may be additive that's fallen out of suspension, if this oil is particularly old.
VOA #1

MI/HR ON OIL: - - -
MI/HR ON UNIT:- - -
DATE:11-28-07

ALUMINUM: 1
CHROMIUM: 0
IRON: 2
COPPER: 0
LEAD: 0
TIN: 0
MOLY: 0
NICKEL: 0
MANGANESE: 0
SILVER: 0
TITANIUM: 0
POTASSIUM: 0
BORON:2
SILICON: 6
SODIUM: 0
CALCIUM: 2596
MAGNESIUM: 9
PHOSPHOROUS: 837
ZINC: 974
BARIUM: 1

SUS VISC. @210F: 72.4
Cst Visc. @100C:13.58
Flashpoint (F): 415
Fuel %: - - -
Antifreeze %:- - -
Water %: - - -
Insolubles %: 0.1
TBN: 12.7
TAN:
ISO Code:

My COMMENTS: “CI-4/SL” rated Rotella “T” 5w-40 Synthetic

I thought it was interesting comparing the used oil's ('old' CH rated "T" 5w-40), zinc/phosphorous numbers to the virgin CI-4's numbers.
Used CH rated:
Phos: 1111
Zinc: 1379
Virgin CI-4/SL rated:
Phos: 837
Zinc: 974

We currently run the "T" 5w-40 in a variety of diesel powered J-D equipment (a 310D loader/backhoe, 6x4 Gator, my 955 CUT, my brothers' 755 CUT's). I had been using it in my X595 garden tractor, but recently went with J-D's 0W-40 super synthetic stuff in that one. I'll see if I can get some VOA/UOA's on that, too (this website becomes addictive, quickly!!), plus, I'd like to see a VOA on the 'old' CH rated Rotella 5w-40. Maybe I can sacrifice a few precious ounces from my rapidly dwindling stash.

Why, why, why didn't I buy every gallon of the old stuff at Wally's?

 

[Cutehumor]

SH? interesting they note the solubles as additive fallout. how old have you had this oil? I have rotella T 10w30 SL that I have had for 3-4 years that I'm about to start using up. this has got to be older than that.

 

[RWEST]

Oops!! That was supposed to say "SL" not SH.

Quote:
how long have you had this oil?

About 3-4 years.

 

[Towel_Rail]

The Zn/P look too low in the VOA. Must be either the lab, or the additives falling out, for whatever reason.

 

[jmac]

From memory it looks about right and in line with other VOA's on the Rot T syn. that is from memory though.

 

[Towel_Rail]

I haven't seen many VOAs for the 5W40 Syn, but they usually indicate 1000+ ppm for both P and Zn.

Most recent thread I could find: http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=478490#Post478490

 

[Rock_Hudstone]

Originally Posted By: Towel_Rail
The Zn/P look too low in the VOA. Must be either the lab, or the additives falling out, for whatever reason.

Those numbers look very low, almost like a CJ-4 grade.

The VOA I've seen on the Rotella CI-4+ 5w-40 were typically in the range of 1300/1400+ ppm P/Zn, Calcium 3000+ ppm. I suppose it's possible the CH version was milder, but I doubt it.

Seems to me Blackstones VOA always fall on the low side for some reason.

 

[jmac]

That is what happens when you go on memory .

 

[Tornado Red]

I have 10 gallons of Mobil Delvac 5w40, CH-4, that I'll start using next month. Anyone think I ought to send in a virgin sample from one of the pails? It's what I'll running for the next 80k miles.

 

[Towel_Rail]

You could if you want. I'd just shake it up before using -- it's known to be an excellent oil, no worries.