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  1. #1
    New Member
    Join Date
    Nov 2011
    Location
    marin ca
    Posts
    1
    Corvette(s)
    A friends 1993

    Default Mobile One oil with 3000 miles on it has little dark globs..........

    This is a friends 93 V8- I think the 300 hp one and I checked dipstick (cold) and noticed clean looking oil with a little dark glob towards lower 1/3 of dipstick.
    So in again and same thing...been looking at oil on dipsticks 40 yrs now and never seen this.

    After a 50 mile run same day, I checked it again hot and sure enough...every time it has little tiny bits of something suspended in oil (always in bottom part of dipstick)
    any ideas? cars owner not worried... hey they run hot....
    but I think maybe some gasket material? why is the oil filter not getting this?
    hmmmmm
    oh yeah 123,000 miles and always has had mobile one oil.
    Thanks!
    ps idles real rough - tailpipe inside is very dark black sooty smells like she runs rich and hot.
    what a fun car to drive! its a convertible - its got me thinkn bout buyn a cheby

  2. #2
    6 Shooter's Avatar
    Join Date
    May 2002
    Location
    Missoura Ozarks
    Posts
    10,157
    Corvette(s)
    Millennium Yellow LS6 enhanced Roadster

    Default

    Sounds like a coolant leak to me...

  3. #3
    - Online
    vett boy's Avatar
    Join Date
    Feb 2005
    Location
    NH ,ME,FL,MS
    Posts
    3,227
    Corvette(s)
    2008 vert 6M silver

    Default

    It's water /coolant from as 6 shooter said or condensation .

  4. #4
    Roc
    Member Roc's Avatar
    Join Date
    Mar 2005
    Location
    Bowling Green, KY
    Posts
    50
    Corvette(s)
    2002 coupe, 2006 Z06

    Default

    with running rough makes me think head gasket is going
    "Leave later, drive faster, get there first"

  5. #5
    Member dougelam's Avatar
    Join Date
    Jul 2011
    Location
    Michigan
    Posts
    61
    Corvette(s)
    2002 Roadster

    Default

    I would be willing to bet it is something in the dipstick tube getting picked up when the stick is pulled out

    2002 W/Borla Exhaust

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