blown motor :(((
#16
Registered User
iTrader: (2)
Join Date: Apr 2008
Location: Sacramento CA
Posts: 473
Car Info: 02 wrx love-wagon
yes oil makes a difference,
are you tuned? running OTC map?
if your engine was in good status before it blew, i would suspect the tune rather than oil.
also its a good idea to do oil analysis every once in a while, i do them every 10k or so. if you start getting an increased amount of metals in your oil, espeically non-ferrous it's a good indication of bearings wearing out, that way you know that u need to take it easy on the engine untill you save for parts/new block etc.
are you tuned? running OTC map?
if your engine was in good status before it blew, i would suspect the tune rather than oil.
also its a good idea to do oil analysis every once in a while, i do them every 10k or so. if you start getting an increased amount of metals in your oil, espeically non-ferrous it's a good indication of bearings wearing out, that way you know that u need to take it easy on the engine untill you save for parts/new block etc.
#17
In Russia, Title Choose You.
iTrader: (29)
All the people preaching about oil please show me cases of engine failure directly related to use of Mobil1.
I'm not defending it, just sounds like its blown WAY outa proportion and people spreading misinformation.
OP - how high did you spin it? is it tuned? what is your rev limit set at?
Sounds like severe user error destroyed this motor and not much else. I don't see a motor running perfectly for 40k all of a sudden spinning a bearing. But I'll reserve final judgement for when actual teardown and assessment happens.
I'm not defending it, just sounds like its blown WAY outa proportion and people spreading misinformation.
OP - how high did you spin it? is it tuned? what is your rev limit set at?
Sounds like severe user error destroyed this motor and not much else. I don't see a motor running perfectly for 40k all of a sudden spinning a bearing. But I'll reserve final judgement for when actual teardown and assessment happens.
#19
Registered User
iTrader: (17)
Join Date: Oct 2008
Location: Bay Area
Posts: 2,178
Car Info: 07lmtd 6spd wrx eq tuned
I also don't believe oil is the issue here...but I've stayed away from mobile 1, always used oem,motul and amsoil(lately).
OP, what are your mods? How long have these mods been installed? What tuning have you done?
OP, what are your mods? How long have these mods been installed? What tuning have you done?
#20
All the people preaching about oil please show me cases of engine failure directly related to use of Mobil1.
I'm not defending it, just sounds like its blown WAY outa proportion and people spreading misinformation.
OP - how high did you spin it? is it tuned? what is your rev limit set at?
Sounds like severe user error destroyed this motor and not much else. I don't see a motor running perfectly for 40k all of a sudden spinning a bearing. But I'll reserve final judgement for when actual teardown and assessment happens.
I'm not defending it, just sounds like its blown WAY outa proportion and people spreading misinformation.
OP - how high did you spin it? is it tuned? what is your rev limit set at?
Sounds like severe user error destroyed this motor and not much else. I don't see a motor running perfectly for 40k all of a sudden spinning a bearing. But I'll reserve final judgement for when actual teardown and assessment happens.
Mobil 1 5w30 has shown to shear to w20.
There are plenty of UOAs on bobistheoilguy.com that show Mobil 1 5w30 performs poorly.
look at viscosity results
Here's a 2011 wrx w/ 5k on the odometer
here's a 2011 STI w/ 3k on the odometer, Rotella on the left, Mobil1 5w30 on the right
M1 EP 5W30 7538 Miles - 2011 WRX - Bob Is The Oil Guy
Mobil1 5W-30, Subaru WRX, 4,900 miles, Cu prob? - Bob Is The Oil Guy
1k miles on odometer
Mobil 1 EP 5W-30, 7232 mi, 2000 Subaru Impreza 2.5 - Bob Is The Oil Guy
all of these show mobil 1 breaking down to a 5w20 within 5k (as early as 1k in some UOAs)
#21
In Russia, Title Choose You.
iTrader: (29)
every comment says "it shouldn't hurt anything". I understand what your concern is, but: my question was - show me where it resulted in catastrophic failure and/or cause the motor to spin a bearing. maybe I'm just not looking through those sheets hard enough.
for what its worth - I use rotella/amsoil/etc too
for what its worth - I use rotella/amsoil/etc too
Last edited by Vladi; 10-17-2012 at 05:39 PM.
#22
every comment says "it shouldn't hurt anything". I understand what your concern is, but: my question was - show me where it resulted in catastrophic failure and/or cause the motor to spin a bearing. maybe I'm just not looking through those sheets hard enough.
for what its worth - I use rotella/amsoil/etc too
for what its worth - I use rotella/amsoil/etc too
The UOAs are from living motors, not blown ones. If people knew before hand, they'd change. An oil's life is as good as it's ability to maintain it's manufactured state. Mobil1 doesn't do that, and it can further degrade at an unknown rate and involve things like consumption. It shows that Mobil1 5w30 breaks down relatively quickly (1k miles in some cases). This also can attribute to consumption. You can extrapolate the data to make guesses of how long the motor would last under those conditions. No one has the ***** to run mobil1 further to see. Most people are afraid to continue using mobil1 after seeing such results. These are only a few snaps I took, there's a TON of data on this. It's no mystery.
#23
In Russia, Title Choose You.
iTrader: (29)
LOL we're agreeing but neither of us wants to admit it? Ok, I'll go first: I agree with you that its not the best oil. For this reason I too don't use it. But my point is, the above posts all make it seem like mobil1 either destroyed, or heavily contributed to the destruction of his motor, and I refuse to agree with that, because well I don't think that's true.
But we're all just guessing here, since OP didn't care to provide any crucial details.
I guess we'll see when its opened up and inspected.
But we're all just guessing here, since OP didn't care to provide any crucial details.
I guess we'll see when its opened up and inspected.
#25
LOL we're agreeing but neither of us wants to admit it? Ok, I'll go first: I agree with you that its not the best oil. For this reason I too don't use it. But my point is, the above posts all make it seem like mobil1 either destroyed, or heavily contributed to the destruction of his motor, and I refuse to agree with that, because well I don't think that's true.
But we're all just guessing here, since OP didn't care to provide any crucial details.
I guess we'll see when its opened up and inspected.
But we're all just guessing here, since OP didn't care to provide any crucial details.
I guess we'll see when its opened up and inspected.
#26
Registered User
iTrader: (1)
Join Date: Jan 2010
Location: Sacramento
Posts: 1,345
Car Info: '01 GC8 & '96 OBS
I use Mobil 1 all the time in my rs and intermittently on my Wrx but eh I don't push my car at all and it sees oil changes frequently. No problems here.
Sorry about the car Jeff, hope it all works out for you bud.
Sorry about the car Jeff, hope it all works out for you bud.
#29
Technical Know-It-All
Join Date: Oct 2003
Location: Sterling, VA
Posts: 2,123
Car Info: '02 WRX + '15 WRX
The biggest reason for spun bearings is probably bad tuning.
#30
Registered User
Thread Starter
iTrader: (2)
Join Date: Nov 2009
Location: Santa cruz
Posts: 559
Car Info: Wrb bugeye
So I drained the oil last night and it I got no metal shavings or anything. Looked like what the oil generally looks like when doin an oil change. I then got the stethoscope out and started listening for where the sound was coming from (after adding oil again) and it sounded like its coming from the Driver side top end, on the cylinder closer to the firewall. So hopefully today I'll get a chance to pop the valve cover off and see what I can see.
Last edited by GD916; 10-18-2012 at 08:08 AM.