Losing oil and black smoke

2002 NISSAN ALMERA
170,150 MILES • 1.8L • 4 CYL • 2WD • MANUAL
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SAALE CULE
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Shorting oil always and too much black smoke and sometimes if you are climbing hill with speed it will slowing.
Dec 4, 2019 at 5:06 AM
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AL514
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Hello, how low does the oil get and how much time does it take before you have to add oil? Obviously the engine is burning oil, ie the black smoke.
Dec 4, 2019 at 5:37 AM
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SAALE CULE
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Sometimes if I go far I have to add another 2 litters of oil.
Dec 4, 2019 at 5:46 AM
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AL514
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That's way too much oil to be leaking out or burned, possibilities are bad valve seals, worn out piston rings, low compression . Most likely there may be internal mechanical damage. Excess oil be burned can lead to premature catalytic converter failure. Which may have already happened.
Dec 4, 2019 at 7:49 AM
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STRAILER
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If I can jump in here. this guide says a lot about the causes of black smoke:

https://www.2carpros.com/articles/engine-black-smoke

Please run down this guide and report back.

Dec 4, 2019 at 11:17 AM