Brands & Types of oil
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This is a discussion on Brands & Types of oil within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hey everybody! I'm getting ready for my first oil change, 1K miles. I want to go with synthetic. Somebody recommended ...

  1. #1
    Registered User element533's Avatar
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    Which brand of oil?

    Hey everybody!

    I'm getting ready for my first oil change, 1K miles. I want to go with synthetic. Somebody recommended a brand called "Red Line". I've also seen reference to "Mobil1" on the forums here.

    Can anybody give me the low-down? Which is better? Is the more expensive one worth the extra cost?

    Right now I just use my WRX to commute (25 miles round trip), race on the freeway , and go for long drives once a week. Also, I plan to change the oil again at 3K, and follow the manual from that point on.

    Muchas gracias!

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    Registered User Wade-0's Avatar
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    Put about 9000 more miles on it before you start using synth, if you want the engine to wear correctly.

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    Registered User djrez4's Avatar
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    I have Mobil1 in my baby. She likes it
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    Registered User element533's Avatar
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    Originally posted by djrez4
    I have Mobil1 in my baby. She likes it
    How many miles did she have when you started with Mobil1?

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    Banned dark_rex's Avatar
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    Originally posted by Wade-0
    Put about 9000 more miles on it before you start using synth, if you want the engine to wear correctly.
    this is one opinion. others say get the synth in on the first change to minimize wear on the turbo. to be honest, i've read all the industry publications, and there is no substantial proof to to really drive anyone either way.

    i'd do some reading and make your own judgement. i went synth right away and at 36K, i have had no problems what so ever. <shrug>

    dR

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    Registered User WRXed's Avatar
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    I'll throw my opinion in there as well. Since this is the 1,000 mile mark, I'd just put "normal" oil in this time and then perhaps switch to synthetic for the next one (I'd probably skip the next one too, but that's just me). I just feel like the rings, etc. should have *some* friction at the start of their life to help with "settling" before I'd switch to synthetic.
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    Registered User Wade-0's Avatar
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    Originally posted by WRXed
    I'll throw my opinion in there as well. Since this is the 1,000 mile mark, I'd just put "normal" oil in this time and then perhaps switch to synthetic for the next one (I'd probably skip the next one too, but that's just me). I just feel like the rings, etc. should have *some* friction at the start of their life to help with "settling" before I'd switch to synthetic.
    Personally, on my 2.5RS, I ran 100% synthetic in it for it's entire life (since first oil change) and didn't have any problems. But after reading multiple posts on boards like this one about Piston rings not wearing in while using synth, I decided to ask an expert - the oil change guy - before doing it in my WRX. He had $30 more for an oil change on the line, and he told me not to run synth until I put about 10K on the car. Why would he lie? To lose money?

    I've seen far too many people recommending synth only after sufficient engine wear to ignore it. I'd rather not take any chances.

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    Registered User djrez4's Avatar
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    Your rings are broken in after the first 20 miles of driving.....

    I switched to synthetic at my 3k mark. No problems yet. (except for the jackasses double-gasketing my oil filter once. Fixed for free...)
    Last edited by djrez4; 01-03-2003 at 08:46 PM.
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    Banned dark_rex's Avatar
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    operating the car at operating temp a few times efffectively "seals" your rings. it's more of a temperature issue than wearing in metal as you guys are portraying.

    but they are sealed from the factory, else you'd be having compression problems right away when driving it. the test run of the engine in the factory (with the factory oil OFTEN SYNTHETIC) is enough pressure and heat to mate the rings to their new surrounding metal surfaces.

    dR

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    Registered User Wade-0's Avatar
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    While we're on the topic, do any of you run synth in your diff?

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    OIL

    no mobil 1 at autozone today, im 1000 miles overdue for a change, and they were all sold out, bastards.... i bought Valvoline synthetic which was 4.29 a quart, versus mobil 1 @ 5 bucks and bought a FRAM Oil Filter. Should i be ok with this??? Also id like to say this whole waiting till 10k miles for synthetic is B.S. Its what you will find todays best engines from Mercedes Benz, Porsche (Horizontally Opposed), and the chevy blocks in the vette. im sure this thread is old, so if no one responds ill ask a moderator's opinion on the oil. I just hope its decent oil, its valvoline's best...
    2003 Black Sedan
    M/T

  13. #12
    tan
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    Thinking Man's Engine tan's Avatar
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    Just because some of us are moderators, doesn't mean we know it all....but since you asked...

    Most of the German makes and the Vette use some form of Mobil 1 from the factory. VW and Audi use Castrol Syntec.

    My oil burner came with Syntec from the factory and Mobil Delvac 1 5w40 is in its crankcase.


    Before someone says all Fram is crap, according to the minimopar oil study....The ToughGuard, is one of the recommended filters according to that site. The Extra and Double guards are crap though.

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    Registered User InfamousDX's Avatar
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    Originally posted by Wade-0
    Personally, on my 2.5RS, I ran 100% synthetic in it for it's entire life (since first oil change) and didn't have any problems. But after reading multiple posts on boards like this one about Piston rings not wearing in while using synth, I decided to ask an expert - the oil change guy - before doing it in my WRX. He had $30 more for an oil change on the line, and he told me not to run synth until I put about 10K on the car. Why would he lie? To lose money?

    I've seen far too many people recommending synth only after sufficient engine wear to ignore it. I'd rather not take any chances.
    It's just another personal opinion from another educated person. I've asked the same question to a Certified Technician and he said it's better to run it after your engine break-in. He even had examples of 2 blocks, one with synth from mile 1000 vs. one with syn after 10K miles. The syn from 1,000 miles was substantially better after close inspection. So I don't believe there is a final answer to this question.

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    tan
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    Thinking Man's Engine tan's Avatar
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    I should mention BMW engines are notorious for drinking oil (1 quart every 3000 miles is acceptable). It's even worse with the M-spec engine. And they use something like a 10w60 oil that is exclusive to BMW.

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    Registered User bdoug's Avatar
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    Orig. posted by EIonJess here coming up on 3k miles, got some oil ?'s

    I sent an email to Subarau at mysubaru.com concerning the use of synthetic oil. Here is the response below. Take for what it's worth.


    Thank you for contacting the Subaru Web site, and congratulations on the purchase of your '02 Impreza WRX! We hope that you are enjoying this exciting model!

    As for synthetic oil, this is your decision. Our Technical Services Department advised that if you do decide to use synthetic oil, that you always use it because your engine will become accustomed to it. The same goes if you decide to use 'regular' oil.

    We recommend that you first change the oil in your WRX at 3,000 miles or 3 months, whichever comes first. We STRONGLY recommend that you at least wait until the break-in period of 1,000 miles is surpassed.

    The break-in period of the engine requires that a given amount of friction exists between components. The piston rings need to rub against the cylinder wall to break-in or finely tune the machine mating between the two metal parts. To properly seat all mechanical components, a certain amount of friction is required between the metal parts. Since synthetic oil has a lower friction rating than regular oil, we recommend that Subaru owners wait until after the 1,000 mile break-in period to switch to synthetic engine oil.

    Synthetic engine oils can be used in our engines if the user follows the engine oil recommendations prescribed in the Owner's Manual. Subaru has not tested the compatibility of all synthetic oils with engine seals, but the petroleum industry does adhere to standards for the refining process which meet Subaru requirements. Subaru does not guarantee the performance of any brand of any engine oil.

    Engine Oil Guidelines: - only use engine oil that meets or exceeds the API classification designated in the Owner's Manual for the vehicle - only use engine oil that meets the VISCOSITY requirements for the ambient temperatures under which the vehicle will be operated as outlined in the Owner's Manual - THE ENGINE OIL MUST BE CHANGED AT THE INTERVALS SPECIFIED IN THE WARRANTY AND MAINTENANCE BOOKLET FOR THE VEHICLE. SOME SYNTHETIC OIL REFINERS RECOMMEND EXTENDED OIL CHANGE INTERVALS. SUBARU DOES NOT RECOMMEND ANY DEVIATION FROM THE SPECIFIED INTERVALS IN THE OWNER'S MANUAL.

    Thank you for the opportunity to be of assistance.
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