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  1. #1
    Join Date
    Aug 2018
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    Default 300tdi oil thermostat housing O ring replacement

    Hi all,
    I need to change out the o ring on the oil thermostat housing. The issue is I want to do it in my apartment building underground garage but I don't know how much of an oil spill I can expect once I remove the oil cooler pipe. Anyone have an idea?

  2. #2
    Join Date
    Mar 2015
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    New Germany
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    Default Re: 300tdi oil thermostat housing O ring replacement

    Will not be much just get a tray, I recon less then a cup of oil will leak out
    Last edited by clivemd; 2021/02/27 at 09:53 PM.
    1995 300TDi Defender with VGT Turbo (stolen by my son now )
    2002 Defender with LS1 MS3 ECU, 4L80e, LT230 1.222, Lockers and HD CW&P, 35" with 4" Lift
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  4. #3
    Join Date
    Nov 2011
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    Langebaanweg
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    Default Re: 300tdi oil thermostat housing O ring replacement

    The only oil that might be an issue is the oil in the oil cooler.

    It should not be a lot of oil, but if possible have some blanking plugs nearby to stem the flow.
    My guess is about 250-300mL.
    '07 Land Rover Defender 110 TDI 300 Kalahari (Meisiekind˛)
    '84 Land Rover Defender 110 V8 4-speed Hardtop (Meisiekind) Sold after 12 years of fun and hard work.
    The only thing needed for evil to triumph is for a good man to do nothing.

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  6. #4
    Join Date
    Jan 2007
    Location
    Centurion
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    Default Re: 300tdi oil thermostat housing O ring replacement

    Just make sure you buy the correct o-ring. I tried one from my o-ring kit which was slightly thicker and it broke the housing.

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