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Thread: Upper cylinder lube?

  1. #1
    Join Date
    May 2003
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    Sunny Coast QLD
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    25,574

    Upper cylinder lube?

    A worthwhile investment on a sequential injected V8?
    (starts on pulp till warm switchover, starts on pulp when hot.)
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
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    Its a gas gas gas Tug?


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  2. #2
    Join Date
    Apr 2009
    Location
    Crafers West South Australia
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    Never seen a burnt valve on a LRV8 on LPG yet, they seem to be tough enough to manage without the extra lube.

  3. #3
    Join Date
    Nov 2009
    Location
    Western Victoria
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    12,546
    The alloy V8 already has the hardened valve seats.

    Money for snake oil is best spent elsewhere.
    Unless otherwise stated, this post is the opinion of Mick_Marsh and should be read accordingly.

    Hybrid SIII Stage 1 cab on a RRC chassis

  4. #4
    Join Date
    Jan 1970
    Location
    Canberra Australia
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    13,486
    My 101 runs on LPG - when I bought it had an automatic valve saver system fitted which was a PITA as it leaked all the time. After research I found as Mick indicated that the valve seats are hardened anyway and like most alloy engines upper cylinder lubricant is not needed.

    So i did away with the valve saver and not had any issues at all. Basically if an engine runs OK on modern ULP petrol it will run on LPG ok without issue.

    Garry
    REMLR 243

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  5. #5
    Join Date
    Apr 2009
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    Crafers West South Australia
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    9,986
    Quote Originally Posted by garrycol View Post
    Basically if an engine runs OK on modern ULP petrol it will run on LPG ok without issue.
    Not really true, there are plenty of modern ULP engines that fry valves on LPG. ULP still contains lubricants, just not lead. The early 2.7 litre twin cam Hilux engine was a particularly bad example. You had to buy ones specifically built for LPG or your valves were toast within 20K.

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