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  1. #1
    nJm
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    Petrol

    I'm just checking again, as I'm not entirely sure about this. My GR has been running on Optimax for the past few months that I've owned it, however someone I know a news group seems to think I have to use ValveMaster.

    The '82 XN1 has hardended valve seats doesn't it? Should I use any additives anyway?

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    cheers,
    Nick
    Nick
    1983 Peugeot 505 GR


    "All of its cars from the 1.1 litre 205 through the ugly duckling 309 to the 2.2 litre 505 GTi had a rightness and a righteousness about them that turned every humdrum drive into a journey. Someone, I once wrote, in the bowels of Peugeot understands handling and how a chassis should feel." - Jeremy Clarkson

  2. #2
    Fellow Frogger! DTwo's Avatar
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    Shell says it's ok for a GR......

    <a href="http://www.shellau.com/oneshell/au/optimax/optimax_car_match.asp" target="_blank">Shell Optimax "ok" page</a>

    If you have troubles finding it.....They do spell Peugeot "Peugot" though......terribly reasuring

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    Last edited by DTwo; 22nd August 2011 at 02:12 AM.

  3. #3
    Gone Fishin' Ray Bell's Avatar
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    DTwo:
    Shell says it's ok for a GR......

    <a href="http://www.shellau.com/oneshell/au/optimax/optimax_car_match.asp" target="_blank">Shell Optimax "ok" page</a>

    If you have troubles finding it.....They do spell Peugeot "Peugot" though......terribly reasuring
    Oh yeah... like the spelling of 'reassuring'...

    Well, I have some issues with my XN2 heads, they are eroding the exhaust seats dreadfully using LRP...

    <small>[ 21 July 2002, 03:14 PM: Message edited by: Ray Bell ]</small>

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    Fellow Frogger! DTwo's Avatar
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    Perhaps you missed the pun?
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    Last edited by DTwo; 22nd August 2011 at 02:12 AM.

  5. #5
    nJm
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    LOL

    Ray: I don't know much about pug engines, but I'll guess the XN2 is the sucessor to my XN1? If that is the case then it you think I should use some form of additive for my valves?
    Nick
    1983 Peugeot 505 GR


    "All of its cars from the 1.1 litre 205 through the ugly duckling 309 to the 2.2 litre 505 GTi had a rightness and a righteousness about them that turned every humdrum drive into a journey. Someone, I once wrote, in the bowels of Peugeot understands handling and how a chassis should feel." - Jeremy Clarkson

  6. #6
    1000+ Posts Pug_405_Mi16's Avatar
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    Nick,

    Same engine...XN2 was the Injection version...came in 504 TI

    XN1 is the carbie motor

    Cheers

    Ben
    1989 Peugeot 405 Mi16
    1990 Peugeot 505 GTD Turbo Wagon
    2000 Peugeot 306 XSI
    1973 Peugeot 504 GL





  7. #7
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    I will say it again, the XN motors after 1981 in Australia had hardened exhaust valve seats. The XN2 motor finished in 1976 so it doesn't. The 505 GR is OK to run on unleaded or gas, the 504 TI is not.

    Regards, Graham Wallis

  8. #8
    Gone Fishin' Ray Bell's Avatar
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    They should be okay with LRP, however...

    15 thou out of the exhaust adjustment in 1700kms? Not good.

  9. #9
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    Ray,
    Shell don't recommend LRP as being sufficient for hard driving. You probably need to either add some valvesaver or get hardened exhaust seats fitted.

    Graham Wallis

  10. #10
    Gone Fishin' Ray Bell's Avatar
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    So they are backing out of the 'LR' part of the 'P' description?

    I have two heads in being fixed up with new seats at the moment, then this one I'm using now will have to come off and go in for its turn...

    Then, I guess, I'll just run unleaded?

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