D’oh.....!!!
Thread Starter
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Senior Member
Joined: Jun 2004
Posts: 2,823
Likes: 15
From: Houston, TX
D’oh.....!!!
So, since I have owned our ‘08 Taurus I have always added 6.5 quarts of 5W-20 at my 3000 mile oil changes. Glancing through the owner’s manual this evening, I noticed that the fill capacity is actually 5.5 quarts.....
I haven’t noticed any performances issues because of the over-fill, but anyone have thoughts about possible repercussions? I’ve been running it this way for 2-3 years.....
I haven’t noticed any performances issues because of the over-fill, but anyone have thoughts about possible repercussions? I’ve been running it this way for 2-3 years.....
Thread Starter
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Senior Member
Joined: Jun 2004
Posts: 2,823
Likes: 15
From: Houston, TX
The car only has 24,000 miles on it, so to be honest I don’t think I’ve ever checked the oil level between changes since there are no leaks and no reason to think it would be burning any oil with that low of mileage - especially with an aggressive 3000-mile change interval. I guess if it was going to cause problems it would have shown up by now - just aggravating since I am so diligent about maintaining my vehicles and then do something stupid like this.....
Last edited by ddellwo; Nov 18, 2018 at 09:52 AM.
Technical Article Contributor
Joined: Jan 2007
Posts: 10,636
Likes: 264
From: Vernon, NY
It's hard to say.
The major problem with running too much oil isn't as much as the foaming issue, but as the excess oil burns, it has to be processed through the cat converters. Gas cat converters are not designed to be cleaning up oil and they will get clogged. Similar if your engine is running rich.
Each engine is different too in terms of tolerances and a slew of other parameters, such as well working PCV as to how much oil will be getting out.
At this point, you can't "undo" your mistake. Might as well live with it.
The major problem with running too much oil isn't as much as the foaming issue, but as the excess oil burns, it has to be processed through the cat converters. Gas cat converters are not designed to be cleaning up oil and they will get clogged. Similar if your engine is running rich.
Each engine is different too in terms of tolerances and a slew of other parameters, such as well working PCV as to how much oil will be getting out.
At this point, you can't "undo" your mistake. Might as well live with it.
