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Old 10-17-2018, 06:41 PM   #1
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Default Burning oil

I bought a 2015 Jetta se, 1.8tsi, brand new. It is my daily driver and I commute a minimum of 80 miles a day 5 days a week. It has 123,000 miles as of today.

I have recently noticed that my oil light comes on. It's the orange/yellow color and not the red.
I check my oil level anytime it comes on. Whenever I take the dipstick out and insert it back in, the warning light goes off. I have noticed that it is getting low, pretty often.
I do not see any leaks anywhere on the ground. I replaced the sensor on the oil pan because a piece of debree on the highways hit it perfect enough just to break that sensor. This happened about 8 months ago.

I've noticed since my last oil change that I have had to add 3 more quarts of full syn 5w40, I changed my oil 6500 miles ago as well. This doesn't seem normal to me. I am replacing the spark plugs this weekend because that is long overdue so I'm hoping that can fix it.

Anyone else experience/experiencing problems like this?

How did you fix it?
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Old 01-19-2019, 02:21 PM   #2
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Replace your PCV valve. If you are still losing oil it could be rings. One quart every 2k is not great but also not awful. Replacing spark plugs is needed but won't affect oil consumption.
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Old 01-19-2019, 02:22 PM   #3
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Don't forget to replace the PCV valve!
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Old 02-11-2019, 07:10 PM   #4
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They all "consume" oil, VWs guidelines are high for these models.

PCV does not cause the loss of oil, it is where the oil vapors are traveling
through to be burned through the intake. This also speeds up carbon build up
on the intake valves, and intake runners. A catch can will help slow the build
up, but not prevent it. All forced air intakes have more blow-by than naturally
aspirated. Installing a catch can will help you gauge how much oil is blow-by.
If the PCV is wide open, you lose more oil vapor through there, but, it's still
blow-by gases that are there in the first place. Could also be that the separator
is clogged, allowing more oil through the PCV system.

It also depends on the OIL you are using. I had a '13 TDI, and my catch can would
fill up 2 times before each oil change, with Rotella T6. I switched to DELO400, and
maybe half full at the oil change. The DELO400 is even cheaper than the T6, and
I got less consumption.

Leave your PCV Valve alone, for now... 10:1, that's not the problem, and hardly
ever is. BLOW-BY is the main culprit.



My '15 TSI Sport was always a quart down at oil change. That's NORMAL.
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