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If I switch to synthetic oil will full synthetic oil reduce oil consumption?

Tiny
YAZIDAN
  • MEMBER
  • 2004 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 209,000 MILES
I watched some videos on YouTube and said it does because the molecules of synthetic oil are uniform and leaves a thin film of oil on cylinders walls. Conventional oil are not.
Friday, March 18th, 2022 AT 5:11 AM

11 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

While it is true that synthetic oil provides better lubrications due to more resistance to decay, it may not provide protection against oil consumption.

As for your oil consumption, do you happen to know what is causing it?

Oil can burn due to worn engine components, or having an oil leak. Most of the time when the engine burns oil you will get blue smoke out of the tail pipe.
And engine can burn oil due to faulty piston rings, worn valve steam seals, even when it is over full.

So, the sure way to prevent oil consumption is to find the issue and fix.

Let me know what issues you are experiencing or if you have any questions.
Thank you.
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Friday, March 18th, 2022 AT 3:30 PM
Tiny
YAZIDAN
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  • 90 POSTS
There is no blue smoke from the exhaust and the oil stays clean in the engine. Also, the spark plugs color are normal in my opinion there are not black. The ceramic is white with a little of brownish on it.
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Saturday, March 19th, 2022 AT 5:43 AM
Tiny
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  • 6,383 POSTS
How much oil are you loosing between oil changes?
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Saturday, March 19th, 2022 AT 4:48 PM
Tiny
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  • MEMBER
  • 90 POSTS
At 2,000 miles I added 1/2 QT.
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Saturday, March 19th, 2022 AT 4:50 PM
Tiny
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  • 6,383 POSTS
You know that is not a terrible amount of consumption, especially with the miles.
Changing to synthetic could improve, but I wouldn't rely on that too much.
Losing 1/2 QT in 2,000 miles is not bad.
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Saturday, March 19th, 2022 AT 4:57 PM
Tiny
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  • MEMBER
  • 90 POSTS
I'm thinking of using some BG EPR engine flush and after I will put some Synthetic blend oil. What do you think?
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Saturday, March 19th, 2022 AT 4:58 PM
Tiny
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I think that could help. It is always a good idea to flush after certain mileage to keep things clean.
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Saturday, March 19th, 2022 AT 5:01 PM
Tiny
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  • MEMBER
  • 90 POSTS
What about the oil should I use synthetic blend or high mileage full synthetic?
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Saturday, March 19th, 2022 AT 5:02 PM
Tiny
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  • MECHANIC
  • 6,383 POSTS
Since you are changing over, just go with high mileage full synthetic. That way you know you are getting the best possible option.
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Saturday, March 19th, 2022 AT 5:12 PM
Tiny
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  • MEMBER
  • 90 POSTS
Thank you for your help.
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Saturday, March 19th, 2022 AT 5:13 PM
Tiny
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You are welcome.
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Saturday, March 19th, 2022 AT 5:22 PM

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