Too much oil?

When I send my car for servicing it always comes back with the dipstick showing FAR over filled. (Usually about 1l over, or more). Is this harmful? Otherwise I have to siphon some out - a really slow process!
John
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WOW !!!!! Surely that is not an offical stealership you get it serviced at? (Never use a preposition to end a sentence up with. You may do so only with a question.) Do they charge extra for the extra oil? Wait - there is method to their madness? If you stick the siphon tube in crooked and it dings something, or leaves some smushy stuff in there ... Or maybe the oil pressure just goes too high and the engine blows .... Or maybe the engine blows anyway cause it runs so slow cause of all the extra back pressure from the extra oil ... Yeah! Thats the ticket! Ole Jerkin Shrimp has a new order out to overfill the oil thingy after an oil change so he will make more money and get to retire earlier with a bigger pension!
mcbrue analyzingly under the bridge in the trailer down by the river
96 S420
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"If you stick the siphon tube in crooked and it dings something, or leaves some smushy stuff in there ... Or maybe the oil pressure just goes too high and the engine blows .... Or maybe the engine blows anyway cause it runs so slow cause of all the extra back pressure from the extra oil ... Yeah! Thats the ticket! Ole Jerkin Shrimp has a new order out to overfill the oil thingy after an oil change so he will make more money and get to retire
earlier with a bigger pension! "
While they certainly shouldn't be overfilling it, one quart extra isn't going to result in any of the above disasters happening. And most of it is nonsense. Oil pressure is not related to the quantity of oil, unless it drops so low there isn't enough for the pump to pick up.
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On 2005-06-08 03:57:28 -0700, " snipped-for-privacy@optonline.net"

That is wrong. overfilling the oil level does increase the system pressure above where it should be, and can cause lots of problems.
You should never go over the full mark!
Marty
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Level should be between the dipstick's marks when the engine is shut off and the oil is hot.
Too high a level causes the spinning crankshaft to hit the oil sump and aerate (foam) the oil which causes air bubbles; air can be compressed so the oil pressure is thereby compromised. Same applies to the transmission for the same reason.
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Too much oil is detrimental to your engine... stop going back there unless they are willing to guarantee not to overfill again.
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still wanna know who is overfilling the oil tank - realllllly strange place!
mcbrue curiously under the bridge in the trailer down by the river
96 S420
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