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Old 05-12-2008, 05:43 PM   #1
Dobbs
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Default Just got my UOA in - Mobil 1 5W-30 3100mi

whew... after being an owner for almost two years, i decided to take the plunge and have a UOA done by blackstone labs. first off, their response time was insane -- i sent the oil on wens or thurs of last week and got the results today (monday) with the 2-3 day shipping through USPS (first class, i think it was something like 2 bux). anyway, A+ on response time.

I was a little worried after reading about countless horror stories with Mobil 5W-30 even though i religiously change at 3k, take it easy on the car (always let it warm up, never sleeps outside during the harsh winters, etc), and have noticed zero oil consumption. Today confirmed what my intuition had told me -- that the Mobil 1 has been doing fine. I should add the caveat that I do live in an environment where the average temperature during the winter is probably ~20-30F during the day and ~10-20F during the night. I really feel that the Mobil 1 5W-30 is doing an adequate job for cold starts during the winter (even though the car is plugged in to the block heater and inside a garage...).

This last change, I threw in Castrol GC 0W-30 just to see what I thought, and because the average temperature during the day has come up a bit (to around 50F). I'll do another UOA mid to late summer (or around 3k miles) to let ya'll know how it does. I might switch to Rotella-T next, as I have heard good things about it as well.

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Old 05-12-2008, 07:13 PM   #2
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Duck before the "Mobil1 5W030 thins out and you throw a rod" crowd attacks.
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Old 05-12-2008, 07:18 PM   #3
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YEAH ^^ 10-30 or 10-40 for me at all times and seasons... i hear waaay too many stories about mobile1
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Old 05-12-2008, 07:20 PM   #4
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Quote:
Originally Posted by the real suby dude View Post
YEAH ^^ 10-30 or 10-40 for me at all times and seasons... i hear waaay too many stories about mobile1
You hear stories....he posts FACTS. Not a hard call in my book.
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Old 05-13-2008, 01:18 AM   #5
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Quote:
Originally Posted by the real suby dude View Post
YEAH ^^ 10-30 or 10-40 for me at all times and seasons... i hear waaay too many stories about mobile1
Just put 20w-50 in it... jeeze...
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Old 05-13-2008, 01:31 AM   #6
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What is the total mileage on the engine, mods, and how do you drive it (grandma, normal, autocross, track days, etc...."easy" is a relative term)? Just for reference, no M1 bashing here from me

I am always driving at the speed limit or below throughout the week to save gas and wear, but "driven on Sunday mornings" usually means a ton of autocrossing in very high heat with brutish co-drivers that are not very kind on the car...skews the UOA's a bit, but it's all relative.
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Old 05-13-2008, 09:36 AM   #7
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Quote:
Originally Posted by Dobbs View Post
I might switch to Rotella-T next, as I have heard good things about it as well.
I run the 5w-40 synthetic. It's cheap and does the job but I don't know how much colder being up a mile changes things.

Only switch to Rotella if you're catless.
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Old 05-13-2008, 11:04 AM   #8
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Quote:
Originally Posted by Unabomber View Post
You hear stories....he posts FACTS. Not a hard call in my book.
I have used either Mobil1 5W-30 or 10W-30 since my car had 10K miles on it. This was my most recent UOA (for Mobil1 10W-30).



My silicon has always been a little high, never really understood why, but haven't noticed any adverse effects (as of yet).
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Old 05-13-2008, 11:08 AM   #9
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Quote:
Originally Posted by Unabomber View Post
You hear stories....he posts FACTS. Not a hard call in my book.
+1

Quote:
Originally Posted by JamesWilson View Post
What is the total mileage on the engine, mods, and how do you drive it (grandma, normal, autocross, track days, etc...."easy" is a relative term)? Just for reference, no M1 bashing here from me
Fair enough... this car never sees autocrossing, track events, etc. I live in a town of 15K people, so its not like i'm out "street racing" the thing on Sat night.

Mods are "protune" (by me, conservative timing, conservative fuel -- ~11.0AFR from 1/2 way into boost to redline) stage 2 (~15psig boost, i live at 7200ft so I don't want to push it much harder), titek DP, borla catback, APS splitter w/ JDM hood scoop, samco IC pipes, K&N drop-in.

I usually get ~20-24mpg in town, and have had as good as 34mpg on the highway (65mph, 140mi trip from 7200ft to 5400ft elevation).
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Old 05-13-2008, 11:16 AM   #10
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Quote:
Originally Posted by coyote73176 View Post
I have used either Mobil1 5W-30 or 10W-30 since my car had 10K miles on it. This was my most recent UOA (for Mobil1 10W-30).

My silicon has always been a little high, never really understood why, but haven't noticed any adverse effects (as of yet).
what brand/type of air filter do you have? my UOA results are based upon a K&N drop-in w/ ~14K miles on it after a fresh cleaning...
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Old 05-13-2008, 11:32 AM   #11
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Quote:
Originally Posted by Dobbs View Post
what brand/type of air filter do you have? my UOA results are based upon a K&N drop-in w/ ~14K miles on it after a fresh cleaning...
Have had a few. Current filter is the TXS shorty with cone filter, has not been cleaned/oiled yet.

Previous filter was another cone filter supplied with the AVO intake. Had same/similar results.

Between (the time of) the AVO filter and the TXS, and I had the stock box with standard NAPA gold brand paper filter in there, again, same results.
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Old 05-13-2008, 01:10 PM   #12
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another point of consideration... i used and have always used purolator pureone oil filters. changed every time along with the oil.
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Old 05-13-2008, 02:10 PM   #13
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I did a closer comparo of your results to mine, and other than Boron, Calcium, Phosphorus and zinc, we're pretty close. I have no idea what these indicate (i.e. silicon means dirt getting into system).

I always use a subaru OEM filter when changing oil.

I had 137K miles on my car when this sample was taken. Not sure how many miles on your car.

The only thing I care about is that the mobil1 (whether 5W or 10W-30) is doing what its supposed to be doing (or really any oil for that matter).
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Old 05-15-2008, 09:23 AM   #14
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Pretty good report on a low interval, especially given the mileage. Although notice how it's just barely a 30 grade (9.30 cst's minimum for 30). http://www.bobistheoilguy.com/visc.html
Your next uoa will be helpful to establish a trend.

Boron, Calcium, Phosphorus and Zinc are detergents/anti-wear additives.

-Dennis
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Old 05-15-2008, 12:39 PM   #15
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so the guy drives it like grandma on a wimp tune and changes oil at 3k and has no issues

he could piss in the crankcase and not have issues

this thread ONLY proves that driving like grandma on a wimp tune and regular oil changes yeild fair results
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Old 05-15-2008, 12:59 PM   #16
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Quote:
Originally Posted by Arctic Penguin View Post
he could piss in the crankcase and not have issues
Wouldn't the piss evaporate???
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Old 05-15-2008, 01:02 PM   #17
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Quote:
Originally Posted by Arctic Penguin View Post
so the guy drives it like grandma on a wimp tune and changes oil at 3k and has no issues

he could piss in the crankcase and not have issues

this thread ONLY proves that driving like grandma on a wimp tune and regular oil changes yield fair results
Did you check my UOA? Look at my profile, I (personally) am not driving a stock car, and I most certainly don't drive like my deceased grandma (not even sure if she ever drove a car). I don't beat the crap outta my car, but push 20-22 PSI daily. Been at this stage for over 40K miles.

From my personal history, I have no doubt the (wait, oh my god) Mobil1 is doing exactly what its supposed to be doing.
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Old 05-16-2008, 12:35 AM   #18
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Quote:
Originally Posted by coyote73176 View Post
Did you check my UOA? Look at my profile, I (personally) am not driving a stock car, and I most certainly don't drive like my deceased grandma (not even sure if she ever drove a car). I don't beat the crap outta my car, but push 20-22 PSI daily. Been at this stage for over 40K miles.

From my personal history, I have no doubt the (wait, oh my god) Mobil1 is doing exactly what its supposed to be doing.
i used it and it disappeared from my engine like a whore smokin' crack and the engine sounded like an old worn out sewing machine

i switched to non-piss oil and guess what???

that stopped

no M1 for me

i KNOW better
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Old 05-16-2008, 12:46 AM   #19
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Quote:
Originally Posted by Arctic Penguin View Post

i KNOW better
Funny you would say that. According to his UOA, so does he....
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Old 05-16-2008, 09:03 AM   #20
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Intelligent thread by Dobbs is appreciated. I now have two turbo Subarus in the driveway and we are anxious to get a handle on oil issues. Have been hearing for years occasional testimonials about engine failure with Mobil 1, but the variables are so numerous as to make them unreliable. Besides, ALL motors will eventually wear out--the question is would there be even more failures with other oils? Additionally, even using the best oil will do no good if you use a crappy filter that won't stop #2 gravel. On the flip side, my 04 Accord seems to use some Mobil 1 between changes, with only 86k on the clock. For starters, I ordered 2 Blackstone kits, that seems absurdly cheap insurance for a turbo motor. Thanks for the discussion...
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Old 05-16-2008, 10:21 AM   #21
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Originally Posted by Timdog1650 View Post
Funny you would say that. According to his UOA, so does he....
no

it just proves that one mans piss....er.. oil is another mans piss....er oil


the proof is all over this board

and the VAST majority is in favor of the fact that MANY have had issues with M1 and running a 20 weight oil-regardless of what the bottle says it is and what the 5w M1 really IS- in these cars is not a good idea if they are driven hard.

yep

lotsa idiots around here and im NOT one

i DO know better
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Old 05-16-2008, 10:26 AM   #22
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Quote:
Originally Posted by Arctic Penguin View Post

the proof is all over this board
What in the world are you talking about? This guy has hard scientific evidence in his hand that his engine is in good shape after running M1. I don't see why he should listen to anecdotal stories that include WAY too many variables to be reliable when deciding whether or not to use M1; he has an actual document from a reputable source saying that it is not doing any damage to his engine and that in fact his engine is as happy as ever. You wanna talk about "proof" then prove to me 1 case of someone who used M1 and that was the 100% identifiable cause of engine failure.

Sure, M1 may not be the best motor oil for this guy if he wanted to track his car every other day, but it's doing exactly what he wants/needs it to do and he has evidence to back that up. Sounds like pretty sound science to me...
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Old 05-16-2008, 10:52 AM   #23
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Quote:
Originally Posted by Arctic Penguin View Post

and the VAST majority is in favor of the fact that MANY have had issues with M1 and running a 20 weight oil-regardless of what the bottle says it is and what the 5w M1 really IS- in these cars is not a good idea if they are driven hard.
The reason I started getting the UOA done was because of the horror stories I read on this board about people using M1 and the problems they had.

I have been sending used oil samples to Blackstone since I had 61,081 miles on my car (November 8, 2004).

I have never had to add more than 1 quart between oil changes. I typically change my oil in the 4K to 5K range, with my longest interval (ever) being 5,351 miles.

All I will add at this point, to each his/her own. Everyone has an opinion (including myself), and from the test results I have received over the 80K miles I put on this car (since I started having Blackstone Labs do the UOA), I see no reason to change oils.

What I would like to see, is the percentage (of subaru drivers in this case, with turbocharged motors, not exceeding stage 4 [basically, no built motors]), that use various types/brands of oils, daily driving habits, and location.

I would imagine the percentage of suby owners that use M1 outnumber (greatly) the crowd of other brand synthetic oil users.

Then, I would like to see (for any type synthetic oil used), who blew their motors, and the reason they "think" it exploded.
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Old 05-16-2008, 03:05 PM   #24
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Quote:
Originally Posted by Arctic Penguin View Post
i used it and it disappeared from my engine like a whore smokin' crack and the engine sounded like an old worn out sewing machine

i switched to non-piss oil and guess what???

that stopped

no M1 for me

i KNOW better
excessive punctuation? over use of capital letters? uncle scotty is that you?

Quote:
yep

lotsa idiots around here and im NOT one

i DO know better
evidence? so far what I have seen tends to prove the opposite
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Old 05-16-2008, 06:56 PM   #25
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I know most of the M1 bashing is on 5W-30, but I'll have a UOA on M1 0W-40 coming in soon. So keep an eye out for that if you're still on the fence about M1 products.
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