Oil pressure
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This is a discussion on Oil pressure within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; So I'm having issues with my wrx in the way of oil pressure. My motor is a brand new ej22 ...

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    Oil pressure

    So I'm having issues with my wrx in the way of oil pressure. My motor is a brand new ej22 with 1500 miles on it... The pressure is supposed to sit at 14-12 psi at an idle. For the most part thats where mine sits. But when I'm doing some sporty driving, it drops to like 10 psi. But the oil has to be nice and hot.. I feel as though the oil is breaking down prematurely I changed it like1000 miles ago and I used 5w30 and was informed that was a little thin.. Any ideas? Or do I even have a problem at all?

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    Luke Skywalker Mikie13's Avatar
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    5w-30 is what Subaru uses from the factory...but when you say sporty driving, you mean as taking some twisties and curves?

    If you're taking some turns like that, g-forces will cause oil in the block to shift some, possibly taking it away from the pressure sender. Seems like it'd be normal to me.
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    Subaru Newb MainFrame's Avatar
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    10psi is fine.. now if you're consistently under 5psi, then you've got something to worry about.

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    Registered User jgardiner's Avatar
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    Quote Originally Posted by Mikie13 View Post
    5w-30 is what Subaru uses from the factory...but when you say sporty driving, you mean as taking some twisties and curves?

    If you're taking some turns like that, g-forces will cause oil in the block to shift some, possibly taking it away from the pressure sender. Seems like it'd be normal to me.
    It can't slosh away from the pressure sensor, but it can move away from the oil pickup resulting in momentary oil starvation.

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    Master Baiter EJ257's Avatar
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    UOA will help give you insight about the oil. Look into that.

    Where are you monitoring pressure from?
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    The company that made the motor informed me to put 10 w 40 in but I know Subaru recommends 5 w 30 but I've never seen it drop below 10 psi and that's after I get off thr freeway for like 50 miles at like 100 mph or if I'm doing speed runs down my road.. But from what I'm seeing you guys say it doesn't seem to be a problem

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    I have a gauge running from where the oil pressure sensor used to be on top of the block

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Chas
    I have a gauge running from where the oil pressure sensor used to be on top of the block
    Is there a galley behind the alternator on the EJ22?
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    Yeah that's exactly where I'm coming from

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Chas
    Yeah that's exactly where I'm coming from
    Alright. What gauge are you using?
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    Some old ass sun pro that doesn't use a sensor oil goes right to the gauge

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Chas
    Some old ass sun pro that doesn't use a sensor oil goes right to the gauge
    I would check with another gauge to verify your current findings.
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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by EJ257 View Post
    I would check with another gauge to verify your current findings.

    That's always a good idea just to know your gauge is reading accurately. Although in my experience mechanical gauges are generally more reliable than electronic ones using a sending unit. The only problem here is the potential for oil to leak from the gauge into the cabin and create a mess.. but whatevs, because racecar!

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    Quote Originally Posted by MainFrame View Post
    That's always a good idea just to know your gauge is reading accurately. Although in my experience mechanical gauges are generally more reliable than electronic ones using a sending unit. The only problem here is the potential for oil to leak from the gauge into the cabin and create a mess.. but whatevs, because racecar!
    lmao yes racecar! thanks guys for the help. whats a good website to find cool subie add ons

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