Infiniti FX45, 15k Delvac1ESP5w40. Mixed results

[cheetahdriver]

here is the 15k pull of the D1ESP in my FX45 (VK45). the oil was changed back to M1 TDT. i currently have a gallon of this left, but am not very impressed with the ESP formulation. am also running it in my Miata MSM for an interval (which may be shortened).

Code:




Oil Filter--------M1-109

OIL D1ESP5w40 D1ESP5w40 M1TDT5w40 M1 0w40 M1 0w40 M1 0w40

MILES IN USE ------ 15,077 10,279 9800 9986 5000 9437

MI/HR-ON-UNIT----- 106,356 101,279 91800 69627 59641 54641



ALUMINUM---------- 5 4 4 (3) 4

CHROMIUM---------- 1 1 1 1 (1) 1

IRON-------------- 20 16 26 38 (10) 15

COPPER------------ 5 3 5 3 (3) 3

LEAD-------------- 14 7 7 15 (6) 25

TIN--------------- 0 4 1 5 (0) 0

MOLYBDENUM-------- 6 5 19 75 (74) 87

NICKEL------------ 0 0 0 0 (0) 0

MANGANESE--------- 2 2 1 1 (0) 0

SILVER------------ 0 0 0 0 (0) 0

TITANIUM---------- 0 0 0 0 (0) 0

POTASSIUM--------- 3 3 3 3 (3) 0

BORON------------- 33 33 38 115 (124) 127

SILICON----------- 15 10 11 13 (11) 10

SODIUM------------ 7 6 5 7 (8) 10

CALCIUM----------- 1655 1436 1702 2847 (2551) 2941

MAGNESIUM--------- 1004 819 665 15 (13) 17

PHOSPHORUS-------- 1124 1011 913 823 (728) 813

ZINC-------------- 1739 1434 1150 1016 (895) 1034

BARIUM------------ 0 0 0 0



SUS-VIS@210F------ 82.6 78.2 76.9 71.3 (70.9) 70.9

cSt-VIS@100c------ 16.16 15.06 14.75 13.29 (13.19) 13.19

FLASHPOINT-IN-F--- 415 410 410 390 (420) 395

FUEL%-------------
ANTIFREEZE%-------0.0

WATER%------------0.0

INSOLUBLES%------- 0.2 0.2 0.3 0.3 (0.3) 0.4

TBN--------------- 1.2 2.5 3.0 3.9 (6.0) 2.4


blackstone's comments

Originally Posted By: Blackstone
Lead doubled in this sample, so this oil may have been run a bit too long. However, your engine
did create less wear at 15,077 miles (per mile) on this fill than the average Nissan 4.5L engine does using
3,500 mile oil changes, so it may not be a problem. The viscosity was a bit high but not an issue. The TBN
was short on active additive at 1.2. Continue running 15,000 miles on the oil if you are comfortable with this
amount of wear, but we think this engine/oil combination's sweet spot is probably at around 13,000 mile oil
change intervals. Resample to monitor.

 

[dparm]

Ouch, TBN of 1.2? Try it again with a shorter interval, like they suggest.

 

[SLCraig]

I can only assume it would look fine if run 10k like the other OCI's.

But they weren't that bad either so whatever floats yer boat

 

[FZ1]

10k max oci.

 

[dparm]

Just to be certain, this car is totally up to date on all its other maintenance, right?

An alternative might be Rotella T6 or Chevron Delo.

 

[cheetahdriver]

Originally Posted By: SLCraig
I can only assume it would look fine if run 10k like the other OCI's.

But they weren't that bad either so whatever floats yer boat


the second column is the same oil at 10k. while it didn't do bad, it thickened out of grade and the cheaper M1 TDT did nearly as well on wear. with no additional legs to the oil (this is after a two qt makeup) and the lead getting high, it is back to 10k and TDT.

 

[cheetahdriver]

Originally Posted By: dparm
Just to be certain, this car is totally up to date on all its other maintenance, right?


absolutely. brake fluid changed at 90k with the brake job, the transmission is on the factory recommended 3 qt freshen every 30k, just got new spark plugs and the P/S fluid was changed at 60k.

 

[addyguy]

TBN is low, and Si is a bit higher than before.

It's nothing serious, and your lead levels aren't horrible, but they are just a by-product of pushing an oil to its limit.

I'd say good run - Visc. and Flash are still good, insols. are very low for the interval...you ran it right to the end!

 

[dparm]

Have you considered running TDT out to 15K and seeing what happens?

 

[cheetahdriver]

Originally Posted By: dparm
Have you considered running TDT out to 15K and seeing what happens?


i have thought about doing that. one thing is that the Delvac had 2qts usage at 10k (and was a qt low at 15k), while the TDT was about a qt low at 10k. the 2 qt refresh of Delvac didn't seem to stem the rapidly dropping TBN as i expected it too. i think it would be interesting to try TDT in the same way, but with a 1qt refresh at 10k, it might not do as good at 15k. the other side of this is that it had a higher TBN than the Delvac did at 10k (3.0 vs 2.5).

i think that i will stay with the 10k OCI, however. my goal is to change it out with a ~3-5k cushion, as my schedule is quite changeable.

i had also thought about going to a different oil, the 5w40 Ultra for instance, to see if it did better. the TDT is doing quite well though, and i still have a couple of gallons i bought at 3.50 a qt. i have yet to see the 5w40 Ultra in any store....