How to keep the engine as quiet as new

kentzzskentzzs Member Posts: 13
edited March 2014 in Subaru
Engine will become noiser after couple of years. Except damage and defect, what makes the noise? If the engine is defect free, is it possible to bring it back as quiet as it was new? What kind of tune-up can achieve it, valve adjustment, spark plug replacement, or timing adjustment?

Please share your experience. Thanks.



  • andys120andys120 Member Posts: 23,019
    and what kind of noise? We need details.

    2001 BMW 330ci/E46, 2008 BMW 335i conv/E93

  • nippononlynippononly Member Posts: 12,555
    kent means in general...exhaust shields begin to rattle or fall off entirely...the valvetrain gets noisier...pulleys begin to squeak...all the little things that add up to a noisier engine after the first 100K.

    2014 Mini Cooper (stick shift of course), 2016 Camry hybrid, 2009 Outback Sport 5-spd (keeping the stick alive)

  • swschradswschrad Member Posts: 2,171
    as you go deafer, and the engine noise increases inevitably with age and wear, you won't hear any change.

    even if you over-change the oil and fuss with it like it was a show car, if you drive it, it will wear.
  • rubicon52rubicon52 Member Posts: 191
    I used regular oil in my Camry V-6 for the first few years and the engine gradually became noisier as the years went by. Then, I changed to synthetic oil. After about a year of using synthetic, the engine became noticeably quieter. The engine is 8 years old now and not much noiser than a one-year old Toyota V-6 (I have one of those too).
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,482 each his own...I hate quiet engines--I like to hear it ticking over. Makes me feel I'm driving a machine, not a table or chair.
  • q45manq45man Member Posts: 416
    Other than wear clearances in bearings and wrist pins, ring wear......many notice the fuel injectors getting louder and louder.

    You gotta start from day one with quality oils changed often [every 90 days] and super bypass [external oil filters] to keep an engine quiet over 250,000 miles.
  • armtdmarmtdm Member Posts: 2,057
    Sounds like a bypass filter salesman. In 250,000 miles that's 10-15 years of driving you won't care what it sounds like as long as it runs. And this can be done with regular good maintenance.
  • sgrd0qsgrd0q Member Posts: 398
    Sounds like a bypass filter salesman.

    Well, I think q45man is a rather well respected contributor to these boards. I believe he is a Lexus and Infiniti mechanic.

    In 250,000 miles that's 10-15 years of driving you won't care what it sounds like as long as it runs.

    I used to drive an older car a few years ago. I sold it at 220K+ miles. And I very much cared how it sounded. (It sounded great!)

    And this can be done with regular good maintenance.

    You got this one right!
  • americanflagamericanflag Member Posts: 400

    I have a solution to keep the engine quiet. Don't worry about maintenace too much, but when your engine gets to about 100,000 miles and gets louder, just use some ZMax or a similar additive, that will restore the engine like new!
  • isellhondasisellhondas Member Posts: 20,341
    Of the old Frantz filters that used a roll of toilet paper.

    Haven't seen one of those in awhile!
  • swschradswschrad Member Posts: 2,171
    it died soon after. curious coincidence, eh?
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