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The switch to Synthetic... What leaked?

Discussion in 'Technical Chat' started by boshak, Mar 31, 2012.

  1. Mar 31, 2012 at 12:46 AM
    #1
    boshak

    boshak [OP] Well-Known Member

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    Tony
    Southern California
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    OME 881's, Wheeler's 5-leaf pack, Bilstein 5100's
    First of all: This is NOT a thread asking whether or not I should go to synthetic... I've seen too many.

    My 2003 5vz-fe is going on 150,000 miles and I'm thinking about switching to synthetic after I get through my list of maintenance projects. Most important to mention, since it relates to oil leaks, replacing the valve cover gaskets, cam plugs, and changing the gasket on the semicircular plugs.

    So for those of you that made the switch and complain about leaks... what leaked and how hard/expensive was it to fix? I want to know what I need to look out for and the POTENTIAL risk. I'll be going synthetic all around - engine, tranny, diffs, transfer case.
     
  2. Apr 2, 2012 at 11:03 AM
    #2
    boshak

    boshak [OP] Well-Known Member

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    OME 881's, Wheeler's 5-leaf pack, Bilstein 5100's
    TTT. In short... when switching to synthetic at 150k, what are some potential leaks that i can look out for or be concerned about?

    I'm swapping out valve cover gaskets, cam plugs, and FIPG on semicircular plugs prior to the change so those technically should be okay.
     
  3. Apr 2, 2012 at 12:12 PM
    #3
    Janster

    Janster Old & Forgetful

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    Jandy
    Lancaster, PA
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    Advantage Torza top (tri-fold), Husky floor mats, RuffTuff seat covers, C2C hood struts, Homelink mirror, USA Spec PA15-Toy (120gig Classic & 8gig nano), Garmin Nuvi 660, Protecta Bed mat, Pop-n-lock, TSB Springs, Scangauge II, Heated drivers seat, Fumoto drain valve, Aries pushbar, PIAA 540 fog lights, Hood scoop grahics, Flowmaster 50 series dual catback exhaust, RainX Latitude windshield wipers, Husky rear floor liner (ontop of folded down seats). Console Vault.
    I switched my 96 over to synthetic when I bought it at 60,000 miles. I owned the truck for 5 years to 110,00 miles.

    I never fixed anything - as I never had a serious problem.

    Oil weeped out at the oil pan/gasket area. I also lost or consumed 1/2 quart of oil every 5,000 miles. No smoke or no signs of oil burning at the tailpipe. I changed the oil every 5K miles, so the oil level never bothered me.

    If the truck sat in the driveway for a couple days .....I'd get a brief lifter tap when I'd first start it up. That tap would eventually go away after the pressure built up again in the lifters - only a couple minutes.

    Other than that.... not a lick of problems anywhere else. I used synthetics in all the diffs, tcase, and transmission too.
     
  4. Apr 2, 2012 at 12:26 PM
    #4
    macgyver

    macgyver Well-Known Member

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    Your wallet will leak a little more cash on oil.

    I switched my truck over to everything synthetic after I bought it. I bought it used with 42k miles. No leaks here.
     
  5. Apr 2, 2012 at 12:36 PM
    #5
    98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    I switched my 98 3RZ over at around 80k. No leaks.

    Switch the 4.7L over at/around the same mileage. No leaks. It's got +150k on it now.
     
  6. Apr 2, 2012 at 11:17 PM
    #6
    Norton

    Norton Senior TW Member

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    Switched mine to Amsoil about a year ago, with 55K miles on the clock. Now, sitting just over 65K with ZERO problems - no leaks.
     
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