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Thread: Oil in coolant

  1. 20th August 2023, 12:29 PM #1
    Mjak42
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    Oil in coolant

    2011 4.4TDV8, After a very successful 12,500 klm trip from Melbourne to Ningaloo via Perth towing the caravan, car was amazing. We’ve been back for almost 6 weeks now and after driving 3 hours into Melbourne Airport to pick daughter up I noticed oil in coolant reservoir, I have had an oil leak down back of motor for a while, not too bad but knew I had to do turbo oil supply pipe o rings and possibly the oil cooler gaskets, with the oil in coolant it appears the cooler gaskets are definitely on my list now, will also replace the 4 intake hoses with silicone ones. Car is still running perfectly not getting hot and no faults, but is now staying in the garage until I get the parts to fix it, so slumming it in the Toyota Hiace work van😂
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  2. 20th August 2023, 04:23 PM #2
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    Laurie
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    The oil leak at the back will probably be the pipe at the back of the V on the engine. Easy fix just replace the 'o ring"; preferably with a Viton version. The oil cooler and gasket are not too bad if your handy with tools. Personally I would replace the cooler and gasket, the engine O ring and oil cooler/gasket are the most common failure items on the 4.4TdV8. Silicon replacement hoses are a great option, I changed mine when I brought the car, saves hassles down the road

    Laurie
    2010 TdV8 Autobiography, D2 Td5, RRC 4 Door VM/300Tdi, RRC 2 Door V8
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  3. 20th August 2023, 05:10 PM #3
    Graeme
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    The o-ring in the coolant fitting on the oil cooler is often leaking by the time the cooler starts leaking. Its size is reportedly 18mm x 2.5mm so I have 2 in Viton on hand. I can't confirm the size as mine wasn't leaking when I changed the gaskets. Another coolant fitting towards the front of the V is marked 18x3.0.

    Edit: I see that I bought 18mm x 3mm Viton o-rings too!
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  4. 20th August 2023, 06:56 PM #4
    Mjak42
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    Thanks guys, not sure about replacing oil cooler itself, will give it a good cleanup, have flicked an email out to a few places for prices on gaskets and also Renseal for the BS611 Viton o-rings, will pull her apart this week whilst waiting for parts.
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  5. 4th October 2023, 08:17 AM #5
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    CSBrisie
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    Quote Originally Posted by Laurie View Post
    The oil leak at the back will probably be the pipe at the back of the V on the engine. Easy fix just replace the 'o ring"; preferably with a Viton version. The oil cooler and gasket are not too bad if your handy with tools. Personally I would replace the cooler and gasket, the engine O ring and oil cooler/gasket are the most common failure items on the 4.4TdV8. Silicon replacement hoses are a great option, I changed mine when I brought the car, saves hassles down the road

    Laurie
    Does anyone know where you get the silicon hoses for the 4.4SDV8? I’ve only ever seen the 3.6 advertised?
    L405, Vogue SE, 4.4SDV8, 8 speed, Rear e-diff
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  6. 4th October 2023, 11:45 AM #6
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    Laurie
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    I can't think of the length offhand, but 70mm / 2,75“ inner diameter size silicon hose seems right! If you remove 1 of the hoses you could verify the size. Any hose supplier/auto shop would have these silicon hoses in stock, as they are straight tube; and they will cut them to size for you !

    Laurie
    2010 TdV8 Autobiography, D2 Td5, RRC 4 Door VM/300Tdi, RRC 2 Door V8
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  7. 4th October 2023, 04:09 PM #7
    Graeme
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    The 4 air intake hoses are 70mm ID x 55mm long and I re-used the original clamps.

    I've not seen silicon coolant hoses for the 4.4 referenced anywhere.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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