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![]() | Home > Technical > overfill of engine oil |
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| avtur Joined: 11 Nov 2006 Location: Stockport Posts: 899
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I don't know if this is the 'correct' answer but I've had a similar experience with overfill at service time. There is no doubt that there is a level of oil consumption going on because I have to top up between services (not much, about 0.5 litre to stay half way on the dip stick). I was concerned the first time I saw the overfill it but soon forgot about it, then with a small amount of oil consumption the problem went away so there were no adverse consequences.
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| PJW Joined: 18 Nov 2007 Location: stafford Posts: 62
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Thanks avtur, only had the oil change as i had recently been towing for 2K Miles in france and thought i might be protecting the engine only to let the dealer stuff it up!
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| m1964 Joined: 21 Apr 2007 Location: NY Posts: 65
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| bjartin Joined: 10 Sep 2007 Location: DENMARK ( & NORWAY ) Posts: 181
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You can see pics of my "overfill" here:
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| yamaha-fan Joined: 11 Jun 2007 Location: Munich Posts: 250
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Overfill of engine oil should by all means be avoided as the cram shafts will splash in the excessive oil and oil foam is build up which may prevent proper oil float. The result is overheating of the engine with possible engine damage.
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| muddywheels Joined: 02 Oct 2007 Location: Driffield, East Riding of Yorkshire Posts: 253
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I have experienced overfill on services for years and they always say no problem - makes you wonder why they bother putting the marks on dipsticks and the quantities in the handbook |
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| Chris B Joined: 23 Jul 2008 Location: North Yorkshire Posts: 53
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Yamaha Fan is right - if the oil level is much too high the crankshaft (not the camshaft) may dip in the oil which wastes power directly as well as splashing the oil about. Even if it does not touch the windage will stir up the oil and increase resitance - losing economy/power.
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| pwven Joined: 16 Jul 2008 Location: Kuruman Posts: 52
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Agree with Chris B it is the crackshaft that may splach in the oil causing the foaming. On the level road it may be ok but it is when 4X4ing going up and down steep angles that it is more likely. |
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| yamaha-fan Joined: 11 Jun 2007 Location: Munich Posts: 250
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Thank you Chris - my lousy english.
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| Gambba Joined: 07 Aug 2007 Location: Dubai Posts: 738
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As has been said you should definately not overfill.
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| John L Joined: 07 Jul 2007 Location: Somewhere down south Posts: 108
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I remember hearing of a lady in a Metro about 20 years ago blowing her car up because she literally filled it up with oil!!! Yes thats right she was going on a run so she took the filler cap off filled it up so that it was to the filler neck and drove off from South London into Kent. Blew the bugger up and the Highways Agency had to resurface a lane of the A2 where the oil had blown out and ruined the Tarmac. |
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| snappa Joined: 16 Apr 2008 Location: Aberdeen Posts: 508
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An old girlfriend of mine did similar on her old Vauxhall Nova. Someone told her she needed a top up of oil so she went and bought a can and poured it in.
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