advice on engine oil!!! - Page 2
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This is a discussion on advice on engine oil!!! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally Posted by shamrock Mobil 1 is the worst oil you can use in a boxer engine. Go over on ...

  1. #16
    DUB
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    Quote Originally Posted by shamrock View Post
    Mobil 1 is the worst oil you can use in a boxer engine. Go over on nasioc and do a search on mobil 1 and see how many threads come up in the infomus "spun bering" issue. It shears down very easy. I recommend Amsoil, or Castrol GC
    Link me to some UOAs of people who have spun rod bearings w/ Mobil 1? That's what I thought, shut up.

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    Quote Originally Posted by DUB View Post
    That's what I thought, shut up.
    I dont know why i thought that was funny. Probably because its 2:15am and i should be sleeping.

    If i wasn't a Royal Purple fan, Mobil 1 or amsoil would definitly be my second favorite.

  4. #18
    Registered User indytruckboy's Avatar
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    I did a tour of a Mobil facility where they had a BMW on a dyno/enviroment. They ran it constant, and only stopped it for routine maintenance, like tune up or oil changes. No major engine work. They ran it on Mobil1 Synth. Had close to a million miles on it when I saw it. That was 3-4 years ago. Don't know if it's still up. They called it an experiment. Take it how you want.

    I use plain Pennzoil with a Pennzoil filter every 3000, religiously.
    I work on vehicles that make 650hp and 2400ft/lbs.

  5. #19
    The Default One SeattleJeremy's Avatar
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    I found this one, but it's not much.
    Rod bearing failure - NASIOC

  6. #20
    Registered User wrx0131's Avatar
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    mobil1 5w30 ftw!!

    when i had my engine rebuilt the mechanic put 20w50 in my car.....but i changed it to mobil1 5w30 just last week.....so far so good


    i have an 02 wrx stage 4 with 83,000 miles

  7. #21
    DUB
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    Quote Originally Posted by DUB View Post
    Link me to some UOAs of people who have spun rod bearings w/ Mobil 1? That's what I thought, shut up.
    Quote Originally Posted by jeremy96gase View Post
    I found this one, but it's not much.
    Rod bearing failure - NASIOC
    buzzzz. That is just an instance of engine failure while using M1. I am looking for proof that M1 has caused engine failure. Try again.

  8. #22
    Moderator Donkey's Avatar
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    Quote Originally Posted by DUB View Post
    buzzzz. That is just an instance of engine failure while using M1. I am looking for proof that M1 has caused engine failure. Try again.
    Maybe you should do some searching as well.It's been known for awhile that Mobil 1 5w30 is a "thin" 5w30 oil and not just in the Subaru community.It has been known to shear to a 20w in the first 1000 miles in some instances.
    Last edited by Donkey; 11-08-2008 at 08:15 AM.
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  9. #23
    Geriatric Ginger Mod Rogan's Avatar
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    Here's a test I'm working on, now..

    We have a Saab 9-5 2.3ti 16v.
    It smokes on startup, for just a second, then doesn't do it anymore, until the car sits for a couple hours.. It has 70k miles. I've used M1 in the car since like 40K, and it started doing this about 10k miles abo (car avgs 4-5K/yr).. I have seen a pattern of after about 600-1000mi from oil change, is when the puff of smoke starts happening, then it will continue to puff-start, untilt he next oil change, where it seemingly "stops" the puffing.. then, about 600 or so miles, starts again.. as the mileage continues to grow, the puff gets thicker..

    I use M1 15w30..
    I changed to Castrol GTX, and am around 800mi on the change; no signs of smoke yet..
    Rogan o_0
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    '01 Dodge 2500 CTD 6-holed hand-shaker - 3850# dual disk - 900 lb/ft - SOLD
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  10. #24
    Moderator Donkey's Avatar
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    Also as well people need to be using the right viscosity oil for their application 5w30 is the minumim viscosity recommended for the EJ205.
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  11. #25
    Registered User indytruckboy's Avatar
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    5w30 is way too thin for 130k turbo car. Maybe be alright if no one EVER tested the performance.

    I use 10w30dino oil on my 124k in the winter and 15w40 in the summer. And I beat my car like it owes me money.


    I use 0w20 Mobil1 in the old lady's Focus. But she drives like my grandma.
    Last edited by indytruckboy; 11-08-2008 at 02:45 PM. Reason: missed a word
    I work on vehicles that make 650hp and 2400ft/lbs.

  12. #26
    Geriatric Ginger Mod Rogan's Avatar
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    Quote Originally Posted by indytruckboy View Post
    I beat my car like it owes me money.
    Attached Thumbnails Attached Thumbnails stinky.jpg  
    Rogan o_0
    '96 Dodge 2500 CTD @ 40psi - over 700 lb/ft TQ, 7" stack, and 5speed! - SOLD
    '01 Dodge 2500 CTD 6-holed hand-shaker - 3850# dual disk - 900 lb/ft - SOLD
    '97 Dodge 3500 CTD DUALLY built Auto - 40psi boosties - 750 lb/ft

  13. #27
    Registered User indytruckboy's Avatar
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    ^^^^^^^^^^^^

    Yup, that's where I got it from.
    I work on vehicles that make 650hp and 2400ft/lbs.

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