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Engine burning oil #5212968 09/15/19 06:49 AM
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Espada Offline OP
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My engine is burning oil and there is oil ash on the spark plugs and i dont know if its valve stem or piston rings, if i tried motor doctor 9990 made by Mannol and smoke and burning stops or oil burning is reduced does that indicate that the Piston rings are worn

Re: Engine burning oil [Re: Espada] #5212990 09/15/19 07:16 AM
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joekingcorvette Offline
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I think the BITOG diagnosis team will need more information such as: the make model year and miles on the vehicle. Length of ownership and some past history and more details. cheers


2005 Chevrolet Corvette
2014 Ford F-150 4x4 supercrew
2014 Jeep Grand Cherokee Limited (wifes)
2012 Honda Civic 4 door (my daily driver)
2007 Lund Tyee Grand Sport Mercury 115HP 9.8HP
Re: Engine burning oil [Re: joekingcorvette] #5213053 09/15/19 08:13 AM
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Espada Offline OP
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1998 Mitsubishi lancer with 272000km had engine rebuilt or hauled at 250000 and it started burning oil again

Re: Engine burning oil [Re: Espada] #5213124 09/15/19 09:01 AM
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irad Online Content
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Go back to the rebuilder and ask him the following:
Where the rings replaced? If so where oversized rings used?
Where the cylinders rehoned?
Where the valves or valve guides replaced?
Are the valve caps/seals new?
Was a new cylinder head gasket installled?
Was the cylinder head also rebuilt?

The oil is coming from the rings, head gasket or valve stems. Dry and wet compression testing can narrow it down.

Good luck.

Re: Engine burning oil [Re: Espada] #5213178 09/15/19 10:16 AM
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2004tdigls Offline
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judging by your location (Egypt) cold starts would not be an issue, try a 20w50 or sae 50, the higher viscosity might help a bit

Re: Engine burning oil [Re: 2004tdigls] #5213228 09/15/19 11:07 AM
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Espada Offline OP
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Originally Posted by 2004tdigls
judging by your location (Egypt) cold starts would not be an issue, try a 20w50 or sae 50, the higher viscosity might help a bit

I am already using 20w50, some adviced me to use oil treatment like Mannol doctor 9990 while others said to keep the oil levels in check as the oil treatment will do more harm than good

Re: Engine burning oil [Re: Espada] #5213303 09/15/19 12:45 PM
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andyd Offline
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Keep oil in between dots on the dip stick Do a compression test If all 4 plugs were oily maybe the valve seals were forgotten? Do you have a list of parts and machine work performed?


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Engine burning oil [Re: andyd] #5213305 09/15/19 12:46 PM
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Espada Offline OP
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Originally Posted by andyd
Keep oil in between dots on the dip stick Do a compression test If all 4 plugs were oily maybe the valve seals were forgotten? Do you have a list of parts and machine work performed?

The entire engine like valves and piston rings and all of the engine parts

Re: Engine burning oil [Re: Espada] #5215527 09/17/19 07:22 PM
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Bonnelvr92 Offline
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My car is burning oil too (because of valve seals) I want to see if Lucas heavy duty oil stabilizer will help as a temporary fix, because I don't know if the cracked valve seals letting the engine oil burn with the gas hurt any internal parts inside my engine.

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