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07-02-2011, 09:59 AM
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#1 |
 Drives: Yaris HB Join Date: Jul 2007
Location: Central Alabama, GOD BLESS AMERICA
Posts: 755
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Does it matter if there's some fuel circulating in the oil?
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07-02-2011, 12:34 PM
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#2 | |
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Drives: 2007 Yaris HB Join Date: Dec 2009
Location: Tampa, FL
Posts: 83
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Quote:
Even in a modern, fuel injected car there's always going to be some small amount of unburned fuel that makes it into the oil. Most all of this evaporates on a long drive when the engine gets up to full operating temperature for an extended period. But if a person rarely (or never) drives their car long enough for the oil to get really hot, then this fuel (as well as other contaminants) never gets burned off. The oil just gets more and more diluted by contaminants. This explains how one car can go 10,000 miles and its oil is still good, but another can go 2,000 in the same time and its oil is bad. |
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07-04-2011, 04:37 PM
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#3 | |
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Crazy Oil Sniffer
Drives: MM 09 Yaris 5 Dr LB "Click" Join Date: May 2009
Location: ME
Posts: 498
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Quote:
If the fuel doesn't get evaporated out it can thin oil out, affect lubrication and create deposits.
__________________
"The howl was the sound of God’s casting pot, the morphing of my cells into shape, the forming of oceans out of molten premordial plasma. And I could feel it. I could cry for it. I could cry with it." -The Fitful One 
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