Back in my MB engine rebuilding days I would 'spin' the engine over, with no ignition, until the oil pressure showed up on the oil pressure gauge. Then I would fire it up.....

Darrell

Don & Teresa Merriman wrote:

STP is basically a viscosity index improver or in other words it will not run off as quick as engine oil. OH ya and it´s prime manufacture is Standard Oil Co,

On 7/22/05, Loren Faeth <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:

    STP was the standard for detroit iron  (read loose fit)  With the closer
    and more accurate fit of modern aluminum engines (Read tight fit)  And
    given the "stickiness" of Mobil 1, I would opt for the mobil 1, or
    perhaps
    some Molykote product.  The Molykote product I am thinking of is a
    Molybenum Disulfide suspension in oil.  The Moly is a friction reducing
    agent.   I can't remember what they call the product.  It is
    available at
    bearing supply houses.  (Motion Industries, etc)

    STP is so thick that i'd be afraid of causing some damage from
    assembly or
    start-up  (Distorted bearing caps, etc.) on your engine.
    Yes, I always used to use STP for assembly.  For a cast iron OM
    engine, it
    is ok, but I still have some concerns.  I'm just not sure it is the best
    thing for alum heads etc.  Even the fit of pistons and crank
    bearings are
    tighter on MB engines than the old detroit iron.  I have seen some odd
    distortion of main and crank bearings on high mile cast iron diesel
    engines
    that may have been caused by something like this.  It is irregular
    cavities
    in the bearing surface, on the order of 1/8 to 1/4 inch wide and 1/2-3/4
    inch long.  I have never figured out the cause.  THey are not
    etching from
    acid.  I have seen those too.


    At 12:03 PM 7/22/2005, you wrote:
     >Dave, use something like STP on the bearing surfaces......
     >
     >Darrell
     >
     >dave walton wrote:
     >
     > > I'm replacing the head gasket on my 94 S350. I see ads for Camshaft
     > > Prelube. Is the stuff necessary, or can I just bath everything in
     > > Mobil-1 before I button it up?
     > >
     > > Thanks
     > >
     > > -Dave Walton
     > > 94 S350
     > > 99 E300
     > >
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    _______________________________________
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    <mailto:[EMAIL PROTECTED]>
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--
Don & Teresa Merriman
Market Place Mexico
Vacation Rentals
Property Administration


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