'02 Subaru Forester 4,647 miles M1 SS 5W/30

[UberWRX]

First numbers most recent UOA; second numbers UOA @ 28053 miles; third numbers UOA @ 24677 miles; final numbers universal averages.

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Oil Brand/Weight: Mobil1 SS 5W-30
Type Equipment : 2002 Subaru Forester
Oil Filter: Purolator PureOne
Total Miles : 32,700
Miles on oil : 4,647
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Aluminum 4/4/4/4
Chromium 2/1/2/1
Iron 12/11/11/9
Copper 3/5/9/4
Lead 1/1/2/3
Tin 0/1/3/1
Moly 50/51/27/48
Nickel 0/0/0/0
Manganese 1/0/0/0
Silver 0/0/0/0
Titanium 0/0/0/0
Potassium 0/0/0/0
Boron 112/102/75/69
Silicon 8/8/10/10
Sodium 6/7/6/5
Calcium 2721/2587/2508/2295
Magnesium 22/58/461/201
Phosphorus 675/703/887/754
Zinc 851/768/978/874
Barium 0/0/0/0
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Sus viscosity @ 210F 57.3/55.1/58.1
Flashpoint in deg. F 330/395/375
Fuel % 1.8/ Antifreeze 0.0/0.0/0.0
Water % 0.0/0.0/0.0
Insolubles 0.4/0.3/0.5

Blackstone: We found very little change since the last sample from your Subaru. All wear remained steady for this type of engine, which, along with the steady wear trend, is a very good indication of normal wearing parts and careful operation. We did find a little bit of fuel dilution, which is common in engines that see a lot of city driving and/or idling. We don't consider it a problem until it reads above 2.0%. The TBN read 3.3, showing active additive remaining in the oil. Try 5500 miles for the next sample. Wear should stay in the normal range.

My comments: Very pleased, just wish we didn't have so much short in-town driving. Oh well . . .

 

[Al]

Well, I would want to know where the fuel dilution is coming from. Are you doing a lot of short trips/excessive idling?? Even though with all that dilution your metals are goin in the right direction

 

[UberWRX]

quote:

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Originally posted by Al:
Well, I would want to know where the fuel dilution is coming from. Are you doing a lot of short trips/excessive idling?? Even though with all that dilution your metals are goin in the right direction

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With the exception of the occasional long drive to a relative's home, most of the Forester's trips are lights.

On a brighter note, I think I may have convinced my wife that it's good for the car when we take the "scenic," i.e., longer, route into town.