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Old 05-15-2006, 11:35 AM   #1
DrDRum
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Legacy How bad is it, if...

An oil change place over-fills your oil?

EDIT for clairification: MrsDRum just had the third oil change on our 2005 Outback XT. When they checked the oil level before draining, they said that there was at least 1 quart too much oil in the engine from the previous oil change (done at 5500 mi.) .
They showed her the dipstick, with had an oil mark about 4-5 inches higher than the "hot" mark. What dangers are we looking at here? We've noticed an increase in gas milage (about 21mpg w/ new "correct" oil change, vs. 19.5-ish for the over-filled...all city driving), but besides that, no difference.

The oil change in question would have been from ~5500-8500 interval (changed at 8470 ish), and the new/current oil change is at the correct amount now.

What should I be looking at?
Should I have the subaru dealership give it a once over?

PS. I live in an appartment, so I'm not allowed to change my own oil.

DRum
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Last edited by DrDRum; 05-15-2006 at 11:44 AM.
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Old 05-15-2006, 11:36 AM   #2
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Over filled could mean the crank is splashing into a pool of oil on the downstroke, so that can be bad.

If it happened... there's not much you can do now. If it's still driving fine you're probably okay. That's my 2 cents.
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Old 05-15-2006, 11:36 AM   #3
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having THAT much more oil means the crank is having to beat its way through oil each revolution


its like pounding sand
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Old 05-15-2006, 11:37 AM   #4
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Uhh why do you get your oil changed for you?
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Old 05-15-2006, 11:37 AM   #5
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Quote:
Originally Posted by Protege Menace
having THAT much more oil means the crank is having to beat its way through oil each revolution


its like pounding sand
Meh. 1 quart over probably only pushed the level up a fraction of an inch. I think they escaped unharmed... this time.
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Old 05-15-2006, 11:38 AM   #6
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She drove it that way for 8500 miles? Potentially blown engine seals, lots of other probelms. You'd probably have noticed by now, though. ALWAYS check oil levels regularly, especially after an oil change.
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Old 05-15-2006, 11:38 AM   #7
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Quote:
Originally Posted by linux>windows
Uhh why do you get your oil changed for you?
He's a busy man!

Take it to Jiffy Lube, I hear they do bangup work.
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Old 05-15-2006, 11:38 AM   #8
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Quote:
Originally Posted by rogue
Meh. 1 quart over probably only pushed the level up a fraction of an inch. I think they escaped unharmed... this time.

Quote:
hey showed her the dipstick, with had an oil mark about 4-5 inches higher than the "hot" mark
4-5 inches over hot is a LOT of oil
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Old 05-15-2006, 11:39 AM   #9
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you should take it back to them. Too much oil makes the engine work harder plus could get past the seals. I wouldn't drive it a lot...actually only back to the subaru dealer. If they don't give you another oil change...I would call SOA.
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Old 05-15-2006, 11:39 AM   #10
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Quote:
Originally Posted by linux>windows
Uhh why do you get your oil changed for you?
'Cause I live in an apartment, and am not allowed to do any automotive services on the premises.

DRum
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Old 05-15-2006, 11:40 AM   #11
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Quote:
Originally Posted by linux>windows
Uhh why do you get your oil changed for you?
+1, oil changes on my car are done by me
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Old 05-15-2006, 11:41 AM   #12
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I would think that too much oil would mean higher oil pressure, which could be bad for your seals, no?
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Old 05-15-2006, 11:41 AM   #13
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No No...

When she had the oil changed recently they said the previous place overfilled it. The place she just got the oil change at checked the oil before they drained it and showed her the previous overfillage. She had been driving it that way for about 2800 miles.

DRum
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Old 05-15-2006, 11:41 AM   #14
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Quote:
Originally Posted by Protege Menace
4-5 inches over hot is a LOT of oil
You're right

I read "1 quart" and believed that. 4-5 inches is a ton. How the hell does that work?
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Old 05-15-2006, 11:42 AM   #15
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Quote:
Originally Posted by dcmomentum
I would think that too much oil would mean higher oil pressure, which could be bad for your seals, no?

the oil pump only grabs as much oil as necessary and pressure shouldnt go up at all. main problem is the crankshaft pounding through the oil, wasting gas, foaming the oil up (guess thats not a big prob).
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Old 05-15-2006, 11:43 AM   #16
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Quote:
Originally Posted by DrDRum
'Cause I live in an apartment, and am not allowed to do any automotive services on the premises.

DRum
Do them in the road. Fortunatly the campus popo don't care
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Old 05-15-2006, 11:46 AM   #17
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Quote:
Originally Posted by linux>windows
Do them in the road. Fortunatly the campus popo don't care
Hey, wanna' help me do the next one?
I clearly don't have any of the chit to do an oin change
We'll maybe be going to synthetic the next oil change anyways.

DRum
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Old 05-15-2006, 11:46 AM   #18
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Quote:
Originally Posted by rogue
You're right

I read "1 quart" and believed that. 4-5 inches is a ton. How the hell does that work?
I'm just imagining the guy refilling it... "How much should I put in?" "I dunno, fill it to the top!"
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Old 05-15-2006, 11:47 AM   #19
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they probably just dumped in a 5 quart jug
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Old 05-15-2006, 11:47 AM   #20
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Quote:
Originally Posted by rogue
He's a busy man!

Take it to Jiffy Lube, I hear they do bangup work.
At least at Jiffy Lube you'll never have to worry about them putting too much oil in!
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Old 05-15-2006, 11:52 AM   #21
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I ask 'cause I wanna' know if I should be taking it to my local subaru dealership/shop to have it inspected for damage. Following that would be documenting the overfillage (already done), and pursuing a new engine, care of the place that ****ed up.

But I don't wanna' hastle it if not necessary.
The irony: We got charged for extra oil

DRum
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Old 05-15-2006, 12:11 PM   #22
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Quote:
Originally Posted by DrDRum
Hey, wanna' help me do the next one?
I clearly don't have any of the chit to do an oin change
We'll maybe be going to synthetic the next oil change anyways.

DRum
Sure, It'll take about 10 minutes
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Old 05-15-2006, 12:12 PM   #23
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Quote:
Originally Posted by Protege Menace
they probably just dumped in a 5 quart jug
Which wouldn't be overfilling by much at all.

I think the dipstick level was lying. Maybe the guy didn't know how to read a dipstick. Stranger things have happened.
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Old 05-15-2006, 12:15 PM   #24
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subarus are such cake to do oil changes on, it's a crime not to DIY.

now if you had a civic i'd understand.
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Old 05-15-2006, 12:18 PM   #25
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Quote:
Originally Posted by Protege Menace
4-5 inches over hot is a LOT of oil
I guess you would be the expert on 4-5 inches.
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