Engine oil for the 504
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  1. #1
    Fellow Frogger! Doush_504's Avatar
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    Default Engine oil for the 504

    G'day everyone
    My 504 2L petrol is due for an oil change soon and I am a bit confused. It is currently running on Mobil 1 5w-50 (fully synthetic). I am leaning towards Mobil 1 0w-40 or Castrol Edge 5w-40 there is also Shell Helix Ultra 5w-40 but I prefer the Mobil 0w-40(which we currently use in the 406 with great results) & Catrol.
    I know the recommended for the 504 is 10w-40 but this is only available in Shell Helix Plus and Castrol Magnatec (which is currently doing fine in the 505) but both these oils are SEMI synthetics and I prefer fully synthetic.
    One last thing, about the intervals, should I change at 10k or stay till 15k ? I was going for the 1st option but maybe I am mistaken.
    So, any ideas ?
    Thanks.

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    Chadi

    1982 504 SR white manual sedan with A/C (257 000 Km)
    2012 308 1.6 VTi Vapor Grey manual H/B (35000 Km)
    1994 405 1.6 white manual sedan (208 000 Km)
    1992 605 SV24 (91 000 Km)
    2005 406 2.0L automatic (Replaced with a 2013 C5)
    1983 505 GR white manual sedan with A/C (170000 Km)

    All since new


  2. #2
    Fellow Frogger! DjB8V's Avatar
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    If it were me i'd go something a little thicker, but it's all relative to the age and condition of the engine.

    What sort of distance has the engine done? The thinner the oil, the likely its is to burn in an older motor (slip between old rings, valve guides etc)


    Chris

  3. #3
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    Default Engine oil for the 504

    Hi,

    I have run Mobil 1 5-50 for 26 years in the same motor. It had been reconditioned and had c.50,000kms on it when I started. It has now completed a further 500,000+kms. The motor has not been touched and is extremely reliable.

    Oil changes have taken place at c. 3 months or 10,000kns. The longest distance between oil changes was 13,500 kms.

    I have tried other, thicker, oils. The car did not start as well with these thicker oils, did not rev as well and felt heavy in its response from the engine.

    With slower driving conditions in built up areas I now change the oil filter every time.

    Mobil 1 5-50 would appear to me to be the best investment that I have made for my car's engine.

    Good luck.

    Fred

  4. #4
    Fellow Frogger! Doush_504's Avatar
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    Quote Originally Posted by DjB8V View Post
    If it were me i'd go something a little thicker, but it's all relative to the age and condition of the engine.

    What sort of distance has the engine done? The thinner the oil, the likely its is to burn in an older motor (slip between old rings, valve guides etc)


    Chris
    Thicker than 5w-50 ??
    It's a 1982 model and the engine has 229k, it's in good shape and uses around 100 ml of oil per 1000 km (the owner's manual says 500ml/1000km is OK).

    Quote Originally Posted by Fred View Post
    Hi,

    I have run Mobil 1 5-50 for 26 years in the same motor. It had been reconditioned and had c.50,000kms on it when I started. It has now completed a further 500,000+kms. The motor has not been touched and is extremely reliable.

    Oil changes have taken place at c. 3 months or 10,000kns. The longest distance between oil changes was 13,500 kms.

    I have tried other, thicker, oils. The car did not start as well with these thicker oils, did not rev as well and felt heavy in its response from the engine.

    With slower driving conditions in built up areas I now change the oil filter every time.

    Mobil 1 5-50 would appear to me to be the best investment that I have made for my car's engine.

    Good luck.

    Fred
    I would never think of going heavier but I was willing to go lighter. I think the 3 month interval is impossible for me as the car does 7k per year so around 1.5-2 k per 3 months. I was also thinking that 15k would be too long for an old car and btw I change the filter every time.

    Thanks Chris and Fred for the feedback.
    More opinions & experiences are much appreciated
    Chadi

    1982 504 SR white manual sedan with A/C (257 000 Km)
    2012 308 1.6 VTi Vapor Grey manual H/B (35000 Km)
    1994 405 1.6 white manual sedan (208 000 Km)
    1992 605 SV24 (91 000 Km)
    2005 406 2.0L automatic (Replaced with a 2013 C5)
    1983 505 GR white manual sedan with A/C (170000 Km)

    All since new


  5. #5
    1000+ Posts dino's Avatar
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    a 5 weight in a 70s engine...in the aussie climate...



    dino

    ps...chris is right....

  6. #6
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by dino View Post
    a 5 weight in a 70s engine...in the aussie climate...



    dino

    ps...chris is right....
    Agreed, 10w40 at an absolute minimum I would have thought and preferably 20w50.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  7. #7
    Budding Architect ???? pugrambo's Avatar
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    Quote Originally Posted by dino View Post
    a 5 weight in a 70s engine...in the aussie climate...



    dino

    ps...chris is right....
    i would have thought either a 10/40 or a 20/40 in a 504 tractor engine

    in saying that though, Dino don't run that in the PRV6 now will you , a good 10/40 is what they need and nothing else
    3 x '78 604 SL

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  8. #8
    Fellow Frogger! Doush_504's Avatar
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    Quote Originally Posted by dino View Post
    a 5 weight in a 70s engine...in the aussie climate...

    dino

    ps...chris is right....
    The 5 weight is the least available in fully synthetic, either 5w50 or 5w40

    Quote Originally Posted by Uffee View Post
    Agreed, 10w40 at an absolute minimum I would have thought and preferably 20w50.
    The car used to run on 20w50 mineral oil for years and years until I decided I wanted to go synthetic , so the next step was to try the semi synthetic (Shell Helix plus 10w40) and see how the car reacts to it. I gave it a try and it was absolutely amazing, I immediately felt the difference, better startup in the morning and the car was more willing to rev. This encouraged me to take a step further and go fully synthetic and it was worth it. However I feel the 10w40 was lighter than the 5w50 that's why I wanted to try the 5w40

    Quote Originally Posted by pugrambo View Post
    i would have thought either a 10/40 or a 20/40 in a 504 tractor engine

    in saying that though, Dino don't run that in the PRV6 now will you , a good 10/40 is what they need and nothing else
    We have no 20w40. Either 20w50 (mineral) or 10w40 (semi synth.) but the thing is I feel this would be a step back after using synthetic
    Chadi

    1982 504 SR white manual sedan with A/C (257 000 Km)
    2012 308 1.6 VTi Vapor Grey manual H/B (35000 Km)
    1994 405 1.6 white manual sedan (208 000 Km)
    1992 605 SV24 (91 000 Km)
    2005 406 2.0L automatic (Replaced with a 2013 C5)
    1983 505 GR white manual sedan with A/C (170000 Km)

    All since new


  9. #9
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by Doush_504 View Post
    The 5 weight is the least available in fully synthetic, either 5w50 or 5w40


    The car used to run on 20w50 mineral oil for years and years until I decided I wanted to go synthetic , so the next step was to try the semi synthetic (Shell Helix plus 10w40) and see how the car reacts to it. I gave it a try and it was absolutely amazing, I immediately felt the difference, better startup in the morning and the car was more willing to rev. This encouraged me to take a step further and go fully synthetic and it was worth it. However I feel the 10w40 was lighter than the 5w50 that's why I wanted to try the 5w40


    We have no 20w40. Either 20w50 (mineral) or 10w40 (semi synth.) but the thing is I feel this would be a step back after using synthetic
    You'll always find a new batch of oil will feel much nicer, particularly in a 504 engine after 10,000km. Part of it is the feelgood factor at work, my steering always feels nicer after an oil and filter change even though it has nothing to do with the steering.

    The 504 engine was manufactured when the tolerances that today's engines have were unheard of. 0w and 5w will give you lower oil pressure at startup then what the engine has been designed for. Semi vs fully synthetic has been diluted (pardon the pun) by marketing types, a good semi-synthetic 10w-40 every 5,000km would be as much as you need.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  10. #10
    1000+ Posts dino's Avatar
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    I am willing to make a bet that a 5w40 in a 504 would use about 1l every 300-500 kays....

    thrashed...it would empty the sump in less than half a K...





    I d be trying the 10W50 from elf if you must use synthetic...'tis whats in the PRV at the moment...even though its light years ahead...




    dino

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