Question about 2005 Chevrolet Venture

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05 chevy venture consuming 2 qts of oil every 500 miles. no visible smoke or oil puddles on the driveway. my van has only 90000 miles on it. the valve seals have been redone

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  • paul_alaniz0 Oct 02, 2009

    a standard compression test was done. 150lbs on all 6 cyl. using 20 50 castrol. even tried using a qt. of lucas oil treatment

  • Mike Butler
    Mike Butler May 11, 2010

    Have to ask, sorry. Are you using right grade & good quality motor oil? You say valve seals were done, so I assume guides were checked at same time? Has anyone done a wet/dry compression test on the engine as well? Any info on prior tests or work done, may help as well, to pinpoint cause.



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Be sure to check, or have checked, the PCV system which can also contribute to excessive oil consumption, if plugged or malfunctioning.

Posted on Oct 02, 2009

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To me that sounds pretty common with that many miles. With out changing piston rings also I wouldn't worry to much but make sure u change ur spark plugs as suggeste to avoid fouling.

Posted on Oct 02, 2009


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If you are adding anti-freeze every time this happens, you are still loosing coolant some were. I assume there are no puddles on the garage floor or where you park the van? Check the oil dipstick and make sure the oil is not a "milky"color. Check the passenger side carpet for wetness, you may have to pull it back.
If all of that is OK, you are still burning the coolant by way of the intake gasket or head gasket.
Good luck, let me know.

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