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2011 oil filter cap over tight.

Discussion in 'Gen 3 Prius Technical Discussion' started by terpsmandan, Dec 6, 2023.

  1. terpsmandan

    terpsmandan Member

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    Just got a 2011 and I went to change the oil and the cap was very tight. I have the cap wrench adapter and I couldn’t budge it with a 3/8 ratchet. Ended up with a 1 1/8” socket on the dewalt and finally got it off. Our first oil change. Should I get a new housing for the next change or am I ok just tightening it down with the short 3/8” ratchet?
     
  2. PriusCamper

    PriusCamper Senior Member

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    Yep... A horrible design. You can replace the receiver or buy and adapter so you can use the same disposable oil filter can all the other Prius use. The problem you have is because the tool that grabs that plastic is often used in oil change places with an impact driver, so when they put it back on that driver makes it way too tight. You'll need an oil filter wrench tool specifically able to grab that plastic in as many places as possible so it doesn't slip.
     
  3. Tombukt2

    Tombukt2 Senior Member

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    I usually use my foot on the ratchet to push it the first turn and that's it replace it with a fram orange o-ring and then you shouldn't replace that o-ring for another two three years probably at least that's how it is here use whichever cartridge trips your trigger. It'll be the least of your issues with this model and engine.
     
  4. nicoj36

    nicoj36 Active Member

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    Just tighten with 3/8
     
  5. Tombukt2

    Tombukt2 Senior Member

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    If you have a good o ring on there like the fram orange that's what I have here I don't have any other ones some of the black o-rings I have seen break down pretty good I think that's why they come with every filter The two generation 3s I have here have orange o-rings on them from the fram tough guard or upper end filter and those o-rings I've had on there through 9 or 10 oil changes on both of these cars I have the other o-rings in there blister packaging that come with the filters in the toolbox I don't change them every time because there's no need and then when you tighten you just pull it oomph with whatever wrench or what have you is attached to your tool doesn't matter if it's whatever but you're only touching and a quarter turn at best and that's it they should be no leaking down there no funny business If you really don't like this you can change the three bolts and put the fitting down there that takes the 4967 or whatever filter it is and then you'll be spinning on the rest of your life You won't even need to hardly jack the car up You can just reach under twist twist the new filter on that's it
     
  6. Kenny94945

    Kenny94945 Active Member

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    If the oil filter housing cap is in good condition, I would not replace (and save money).
    But....

    Many have issues with this cap, dare I say even dealerships stock this part, so that implies to me an issue.

    So having the proper oil filter housing wrench, proper torque (I think it is 18 ft lbs), making sure the o-rings are in the proper spot and lubricated, and paying attention to the "lock" tab and proper install orientation of the housing could all be said to be the "key" to not having removal issues. Using an OEM Toyota filter could also aid in maintenance.

    With that said, for piece of mind, having one on the shelf for next time could be prudent.
    Have fun :)
     
    Brian1954 likes this.
  7. Mendel Leisk

    Mendel Leisk Senior Member

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    And the guy who did the last one is long gone?

    If you’re doing them from here on you should be ok. There’s a link in my signature with oil change tips.

    Another for conversion to spin-on filter, if you go that route.

    (On a phone turn it landscape to see signature.)
     
  8. CR94

    CR94 Senior Member

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    There's no need to replace it, unless it got broken in the struggle.
    There's nothing wrong with the design, except that it somehow tempts fools to grossly overtighten it.

    I've never had difficulty taking mine off when it was last installed by myself, or the first time I took it off after the dealer had last changed the filter.

    However, the second time following a dealer oil & filter change, it wasn't easy. In attempting to loosen the thing, first I stripped out the 3/8" square drive hole in my cheap stamped-steel cap tool---at torque far above what Toyota specifies to tighten the cap. Then I filed the hole to fit a ½" drive breaker bar, and tried again. Then the tool slipped on the flute, so I jammed paper between the tool and cap, and tried yet again. Then the spot welds holding the drive hole to the body of the tool broke.

    Next, I bought a "heavy-duty" machined cap tool, and made a shim to ensure fit snugly on the cap. Pushing back on the end of the 14"-long breaker bar as hard as I could with one leg, I still couldn't budge it. Next, I used a board against the breaker bar so I could use both legs, and braced my shoulder against the curb (to avoid sliding myself). Finally my stuck cap yielded. Ridiculous!

    By the time I acquired the stronger tool and finally got the cap off, the old filter had record mileage for me---33819 miles. It was still in good condition, and not significantly clogged.