Kendall GT=1 Syn blend5W-30/Subaru 2.5NA

[AITG]

2006 Subaru Forester 2.5 NA. Same brand and weight of oil since the first oil change. Pure One filters.

Code:


Vehicle mileage

2710 5890 11910 18045 24080 30230

Mileage on oil drain

2710 3180 6020 6135 6035 6150

Fe 42 15 8 5 10 5

Cr 0 0 0 0 0 0

Ni 0 0 0 0 0 0

Al 14 6 3 2 2 1

Cu 68 38 19 5 2 2

Pb 1 0 0 0 0 0

Sn 1 0 0 0 0 0

Cd 0 0 0 0 0 0

Ag 0 0 0 0 0 0

Ti 0 0 0 0 0 0

V 0 0 0 0 0 0

Si 190 47 32 22 19 21

Na 4 1 2 2 2 4

K 1 0 0 0 0 0

Mo 1182 185 57 39 37 42

Sb 0 0 0 0 0 0

Mn 2 0 0 0 0 0

Li 0 0 0 0 0 0

B 151 191 136 117 123 140

Mg 23 6 7 6 6 8

Ca 2007 1745 1879 1849 1880 2148

Ba 10 0 0 0 0 0

P 873 565 564 571 589 700

Zn 1064 677 674 677 682 862

Fuel dilution, %

1.5 1.8 1.6 0.5 0 < .1

Soot < .1 0 0 0 0 0

Water < .1 0 0 0 0 0

Viscosity, 100 C cSt

10.1 8.8 9 8.9 8.8 9.7


Code:


Vehicle mileage

36197 41947 48040 54610 60835 67070

Mileage on oil drain

5967 5750 6093 6570 6225 6235

Fe 5 4 5 9 7 4

Cr 0 0 0 0 0 0

Ni 0 0 0 0 0 0

Al 1 2 2 2 2 2

Cu 3 1 3 3 3 5

Pb 0 0 0 0 0 0

Sn 0 0 0 0 0 0

Cd 0 0 0 0 0 0

Ag 0 0 0 0 0 0

Ti 0 0 0 0 0 0

V 0 0 0 0 0 0

Si 17 16 20 14 16 21

Na 2 2 3 2 3 4

K 2 0 1 0 0 0

Mo 39 40 40 35 42 43

Sb 0 0 0 0 0 0

Mn 0 0 0 0 0 0

Li 0 0 0 0 0 0

B 131 126 105 96 109 86

Mg 6 7 10 6 8 8

Ca 2032 2059 2048 1758 2007 2178

Ba 0 0 0 0 0 0

P 594 669 678 557 595 650

Zn 817 740 780 648 673 760

Fuel dilution, %

1.3 0.7 1.3 1.1 2.1 1.1

Soot < .1 0.1 < .1 < .1 < .1 < .1

Water 0 0 0 0 0 0

Viscosity, 100 C cSt

9.4 9 9.2 9.3 8.8 9.5




Sorry about the chart - Its an Excel spreadsheet but it doesn't transfer well.
The Fe and Cu levels dropped after breakin and everything else is excellent. Si is typical of most new engines using RTV sealants.
Conclusion: there is no reason to run less tham 6k between changes in this service.

 

[chubbs1]

I would say at least 6k intervals are great. what strikes me is how the additive packages have dwindled since the first UOA's. Thanks for the post!!

 

[Al]

Great information. The 2.5 N/A can run on anything. Your numbers are ver/home/allen/Desktop/Computer typical.

 

[AITG]

Originally Posted By: chubbs1
what strikes me is how the additive packages have dwindled since the first UOA's. Thanks for the post!!


The first sample was the factory fill, so it's not going to look like Kendall.

 

[ARCOgraphite]

No bad trends. Hows the fuel mileage? Our 09 just took a 3mpg dip since Oct + Idle now has constant roll(would come and go in the past).

 

[AITG]

Mileage stays in the range from 22+ to 26+ depending on town vs. freeway (town is a relative term: only 7k people).

Thread drift: this is the only car I've ever owned that shuts off the nozzle when it's full-full. Can't get another dime in it.

 

[FZ1]

Nice motor. Driven easily.

 

[webfors]

Nice trending! Try a paper filter if you want to get the Si into single digits. Basic orange Fram did that for me.

 

[ZZman]

Looks like a decent oil.

Nice to see some different brands tested.

 

[AITG]

Obviously you've never ridden with me...

 

[Al]

Silicon on both my 08 and daughter's 08 Forester seem higher. Might be the nature of the beast.

 

[pcfxer]

Looks great, are you considering extending your OCI at all? You may consider changing the air filter after the next OCI is done.

 

[AITG]

Originally Posted By: pcfxer
Looks great, are you considering extending your OCI at all? You may consider changing the air filter after the next OCI is done.


Probably won't extend OCI - I like getting under the car at least twice a year to visually inspect everything.

Why would I change the air filter?

 

[sw99]

Nice report on the Subi!

 

[pcfxer]

Originally Posted By: AITG
Originally Posted By: pcfxer
Looks great, are you considering extending your OCI at all? You may consider changing the air filter after the next OCI is done.


Probably won't extend OCI - I like getting under the car at least twice a year to visually inspect everything.

Why would I change the air filter?


Silicon level is rising. Not that it is high, just that after the next UOA take a look at the Si level. It's more of a prediction based on the previous values.

 

[webfors]

Originally Posted By: Al
Silicon on both my 08 and daughter's 08 Forester seem higher. Might be the nature of the beast.


The Si on my Forester went from 17 to 7 by simply changing from the Subaru OEM filter, which I don't like because of the flexible gasket which can create an uneven seal, to a Fram paper filter with the metal screen backing. The metal screen forces the gasket outwards preventing it from folding inwards resulting in a poor seal. There is also substantially more media area on the Fram paper filter over the OEM.

 

[webfors]

FYI, I recently purchased a couple P1 air filters, that also have the metal screen backing and designed similarly to the Fram.

 

[AITG]

FWIW the air filter was replaced at 68,188 with a Fram. We'll see what the next change looks like.

 

[AITG]

Latest drain at 74340 mi, 7270 on sample.

Code:


Vehicle mileage

74340

Mileage on oil drain

7270

Fe 8

Cr 0

Ni 0

Al 1

Cu 4

Pb 0

Sn 0

Cd 0

Ag 0

Ti 0

V 0

Si 22

Na 13

K 15

Mo 46

Sb 0

Mn 0

Li 0

B 99

Mg 8

Ca 2083

Ba 0

P 731

Zn 826

Fuel dilution, % 1.4

Soot
Water 0

Viscosity,100 C cSt 9.2


I'll watch for possible h/g coolant leak. Air filter change had zero effect on Si. I'm not surprised.

 

[unDummy]

Just use the Subaru Coolant Conditioner with your coolant services and worry less about the h/g coolant leak.

Excellent data.

Give the Fram a little time to load up and that Si will drop a little. There isn't an eternal amount of gasket sealant that will leach indefinitely at fixed rates. Check for other intake leaks. Its dirt.

Any TBN? Get a TBN as your 7k miles every 2 months definitely smells like commuter vehicle. Your OCI's could be pushed to 10k or more with a bit more data.

Any oil consumption?