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20W50 oil

Discussion in 'Defender 90 / 110 / 130' started by 86Davey, Jul 12, 2020.

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  1. 86Davey

    86Davey New Member

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    Hi All, looking for some advice please. could do with putting a couple of litres in my 86 2.5TD 90. My uncle recommends using 20W50 but everything in the internet says 10W 40 or 15 W 40.

    My uncle is pretty old school but generally he knows his stuff.

    what do you guys think?
     
  2. Henry_b

    Henry_b SPARES OR REPAIR

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    15w40 is recommended..
     
  3. lynall

    lynall Well-Known Member

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    20/50 will be just fine, i run 20/50 in one of my 200tdi as it almost totally worn out!

    Old saying goes, any oil is better than no oil!
     
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  4. Rougharse Racing

    Rougharse Racing Well-Known Member

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    Put supermarket 10-40 semi-synthetic oil in it and tell your uncle that you have used 20-50.
     
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  5. dag019

    dag019 Well-Known Member

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    20/50 is for the non turbo engines. The turbo requires a thinner grade oil. If the engine is very worn you may get away with it. But better to stick to the recommended grade.
     
  6. dag019

    dag019 Well-Known Member

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    How do you wear out a tdi what sort of abuse has it been put through, I have 330k on mine and it is still going strong.
     
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  7. lynall

    lynall Well-Known Member

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    I have no idea I bought the engine 2nd hand several years ago, it was covered in dried mud so assumed it was from a dead off roader, and the injection pump was full of veg oil.
    It breathes like a pig when hot, and whilst it goes okay, it is not exactly stunning which it should be as it is in a series, though tbh even if it lost two cylinders it would still be faster than the oriignal 2 litre diesel that was in there!
     
  8. Thor 1950

    Thor 1950 Well-Known Member

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    for hot weather operating (high temps ) works wonderful, old high mile engine, low oil pressure, oil leaks, etc associated with old engines works wonderful, come winter and it makes a diesel start harder, so needs to be changed to a lower weight oil
     
  9. Thor 1950

    Thor 1950 Well-Known Member

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    not true, the temps a engine operates in is more critical.
     
  10. 86Davey

    86Davey New Member

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    Cheers Thor. That’s basically why he said. It’s hot and hilly here at the minute so sounds ideal. I’ll get a full service come Oct and ask them to change it to recommended then ready for winter
     
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