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  1. #1
    Join Date
    Sep 2012
    Location
    Malvern, Worcestershire
    Age
    76
    Posts
    400

    Pre-filling oil filters ?

    Hi Chaps,

    Bit trivial this, but does anyone bother pre-filling the new oil filter when changing the oil ? The canister on my 350 SBC is vertically mounted, so it would be easy, but is it necessary, or even advisable ?

    Brian.

  2. #2
    Join Date
    Sep 2007
    Location
    Peak District
    Posts
    371
    Admittedly i haven't run mine much since the engine was built so haven't needed many oil changes but i didn't even consider pre-filling it. I'm not sure i fancy the idea of trying to screw it in place whilst it's got oil in it. No idea if you're supposed to though.

    Cheers,
    Mark

  3. #3
    Join Date
    Apr 2014
    Location
    Stourport on Severn
    Age
    62
    Posts
    278
    I always refill where possible. I think some of the upside down ones on other cars have valves to retain oil from draining out to minimise the dry running time
    Cheers
    Steve

    My missus asked me to build her a Cobra! – How good is that!

    AK Gen2 chassis arrived 12/2/15 IVA Passed 2/7/18 on road 29/7/18
    http://stevesakcobrabuild.blogspot.com

  4. #4
    Join Date
    Sep 2010
    Location
    Nova Scotia
    Posts
    945
    I always pre-fill too with the exception of horizontally mounted filters. I've been doing this for years, but have to admit, there were many more years of installing filters dry before I knew it was a good idea.

    What I do consider important is to get the engine off idle as soon as it starts. This gets the oil flow and pressure up quickly. No high revving, just a short 2 or 3 second blip to maybe 2000 rpm, and then repeat.

    If you don't do that, it's possible to watch your warning light remain on for a worrisome amount of time.
    John

    “A prudent person profits from personal experience, a wise one from the experience of others.”

  5. #5
    Join Date
    May 2016
    Location
    Hockley ,Essex
    Age
    57
    Posts
    249
    I have a RV8 and have always tried to put as much oil in as possible,
    If you don't mess about to much you should not spill much.
    The other thing is on the rv8 it is recommend that the sump oil should
    be drained and refilled before the oil filter is removed and then replaced with oil
    in filter .
    I can't see any down side apart from a bit of oil spill .
    Chris.

  6. #6
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    537
    RV8 on mine but remote filter which is vertical so easy to do.
    Not sure if it makes a masive difference, the RV8 pump has a good flow rate and would fill the filter very quickly. But why would you not do it, it could not be a bad thing?

    If you have a filter which mounts vertically upside down this is probably not a good idea!

  7. #7
    Join Date
    Jul 2012
    Location
    NW England
    Posts
    537
    Quote Originally Posted by Chris1 View Post
    The other thing is on the rv8 it is recommend that the sump oil should
    be drained and refilled before the oil filter is removed and then replaced with oil
    in filter .
    Chris.
    That is probably good advice. I've never had any issues filling the oil after the filter was replaced during a normal oil change but have where the oil filter was removed for some time (weeks) had to re-prime the pump (Vaseline), IIRC the oil was not removed from the sump either so maybe the advice should also be not to leave the filter off for very long!
    Could also be related to the remote oil filter I have.

  8. #8
    Join Date
    Mar 2010
    Location
    Hertfordshire
    Posts
    974
    Definitely - Mine's mounter horizontally but I prefill it as much as I can before starting up after an oil change

  9. #9
    Join Date
    Sep 2009
    Location
    Leeds
    Posts
    2,964
    yep try to pre-fill mine each time, less cranking on engine to get oil into correct places after drain and re fill.
    Conny - A Carnival Red Metallic (paint code Ref: Jag CGG/1811) Southern Roadcraft V8 ( SRV8 ) with 383ci stroker chevy.

  10. #10
    Join Date
    Apr 2004
    Location
    East Leake, Nottinghamshire, England.
    Age
    56
    Posts
    9,592
    I always fill mine as well just in case.
    Martin

    351W 416.7 HP and 466.8 ft-lbs

    Running Mega Squirt and Edis 8


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