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Old 01-07-2008, 12:14 PM   #1
bluesubie
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04 FXT

Default Used Oil Analysis, German Castrol 0W30, 7,946 mi., '04 FXT

UOA by Blackstone and oil was in use March to December Ď07.
My usual slightly elevated fe and si, presumably due to my five mile daily trips. Not a bad oil for $4.50 a quart.

Late July summer vacation to Myrtle Beach, SC and the Outer Banks, NC saw a few days at 100F. 2,000 miles on that trip. Also did about 20 miles of beach driving in the Outer Banks and a few miles of off-roading in NJ (both slow driving in hot temps). Engine is stock, no racing; only spirited driving.

Currently running dealer conventional with Auto-RX. No issues or anything, just a precaution.

-Dennis

Equipment make: Subaru
Equipment model: 2.5L Turbo
Oil use interval: 7,946
Oil type & Grade: Castrol Syntec 0W30
Make-up oil added: 1 qt (1/2 qt @ 6,500; 1/2 qt @ 7,000)
Miles on unit: 59,890
Air filter: OEM (very dirty and changed!)
Oil filter: OEM

Dennis: This oil was run over 2,000 miles longer than the last and wear was virtually unchanged. The longer oil run didnít bother your 2.5L at all and you could probably push up to the 8,500-9,000 mile mark if you wanted. We see no signs of mechanical problems developing at 59,890 in this data. No fuel dilution, anti-freeze or moisture was found.
Both silicon and insolubles (oil oxidation due to heat use and blow-by) read normally, which shows good air and oil filtration. It looks like youíve got a nicely wearing engine in your Subaru.
Code:
Current; Motul 5W30 @ 5900; GC @ 7,000; GC @ 7,478; 
GC @ 6,144; green GC @ 5,930; M1 5W30 @ 5,774.

Aluminum 4 4 5 4 4 4 6 
Chromium 1 1 1 1 1 1 1
Iron 12 11 12 16 11 10 15 
Copper 7 6 8 7 10 6 20 
Lead 5 2 3 3 3 2 2
Tin 0 0 1 0 1 0 0
Molybdenum 2 3 2 9 4 12 63 
Nickel 1 0 0 0 0 1 0 
Maganese 0 0 1 0 0 0 0 
Silver 0 0 0 0 0 0 0 
Titanium 0 0 0 0 0 0 0 
Potassium 2 0 2 0 0 0 3 
Boron 2 1 0 0 1 14 115 
Silicon 14 14 13 15 15 18 
Sodium 10 11 19 18 6 2 6
Calcium 1812 1252 1783 2165 1689 2582 3394 
Magnesium 587 953 530 436 398 106 10
Phosphorous 873 932 796 816 754 680 764 
Zinc 1106 1025 974 1011 909 818 904
Barium 0 0 0 0 0 0 1 

Properties
SUS Viscosity @ 210F: 11.62 9.64 11.93 11.98 11.44 11.55
Flashpoint: 390 370 380 380 385 365 395 
Fuel %: .5 .5 TR 2.3 .5 1.0 .5 
Antifreeze: 0 0 0 ? 0 0 0 
Water: 0 0 0 0 0 0 0
Insolubules: .3 .3 .4 .2 .5 .4 .5
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Old 01-07-2008, 02:20 PM   #2
skydes
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Too bad I can't find this stuff at my local autozone.
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Old 01-07-2008, 03:27 PM   #3
bluesubie
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Have you checked recently? I thought it was back in stock across the country.

-Dennis
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Old 01-07-2008, 03:29 PM   #4
jac04
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$4.50 a quart? You must have bought it on sale.

I feel so bad dumping my GC at 700-1000 miles during my yearly oil change. I really need to drive my car more.
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Old 01-07-2008, 03:58 PM   #5
bulwnkl
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AAAACK!!! Dennis! You're destroying a perfectly good Subaru for absolutely no reason!! Oh! The horror!!

j/k
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Old 01-07-2008, 03:59 PM   #6
udelslayer
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You can have.

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I love how they state "nicely wearing engine".....
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Old 01-07-2008, 09:49 PM   #7
bluesubie
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jac - Yep, AZ puts it on sale every few months for $4.50. Go drive your car!

bulwnkl -

udelslayer - Why thank you. Last year they told me it looked like I was racing.

-Dennis
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Old 01-07-2008, 10:37 PM   #8
skydes
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Yeah I've checked at 3 autozones in my area. It seems they don't even want to stock it because I have not seen any rack labeling for Castrol 0w30.

I've only seen it once and that was 3 mos. ago.
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Old 01-08-2008, 12:28 AM   #9
Uncle Scotty
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we have an Uncle

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....not cound here in north florida anywhere, either
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Old 01-08-2008, 09:43 AM   #10
bluesubie
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Castrol definitely gets an "F" for the marketing of this stuff. Ok, maybe a "D" since I can find it (knock wood).

-Dennis
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Old 01-14-2008, 11:59 AM   #11
skydes
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Put some GC in over the weekend. Smells different compared to Redline and Motul Xcess.

I think I'll do a UOA after 3750 miles.
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Old 01-14-2008, 12:39 PM   #12
bluesubie
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Quote:
Originally Posted by skydes View Post
Put some GC in over the weekend. Smells different compared to Redline and Motul Xcess.

I think I'll do a UOA after 3750 miles.
Run it to at least 5,000 miles before doing a uoa. It can take it.

-Dennis
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Old 01-14-2008, 01:22 PM   #13
skydes
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I would if I only daily drove my car. But every other week I head to the mountains and do 20-30 miles of hard driving.
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Old 01-14-2008, 02:42 PM   #14
bluesubie
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Sometimes daily driving is tougher on oil. Note the 2.3% fuel dilution in one of my older runs. The oil actually oxidized a bit and was at a thicker viscosity than any of the previous runs. It's rare for an xW30 to stay in grade with that much fuel.

Blackstone comments from that uoa:
Quote:
Your fuel dilution had been improving, though it jumped back up to a problem level in this oil. The viscosity increased and this is backwards of what we normally see with high fuel, so we aren’t sure if the fuel is a major concern or not. The viscosity was still in the 30W range, so we can’t complain about it too much.
-Dennis
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Old 01-14-2008, 05:09 PM   #15
skydes
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Hmm interesting. I did notice with the Redline and Motul that whenever I checked the oil level it did smell "chemical-like". Not like oil.
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Old 01-16-2008, 11:38 PM   #16
esteve
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Man, I love the smell of fresh motor oil.

I'm curious about the double-digit iron levels. Obviously nothing to worry about, but most UOAs of Subaru motors seem to show Fe levels in the mid single-digits.

I see the NJ air is still going strong!
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Old 01-17-2008, 10:22 AM   #17
bluesubie
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Default


I think it's from moisture due to my short trips. I should probably have Dyson look at it. I'm too cheap though.

-Dennis
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