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Oil level hot and cold

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Old 06-02-2013, 06:20 PM
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geoffxr4
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Default Oil level hot and cold

The Mrs' has just got a 1 year old VW Polo and it was serviced at the main dealer just before we picked it up. The oil level on the dipstick is reading well over the maximum so I emailed the dealership to let them know and ask is the catalytic converter covered under warranty in case we have problems? I was gonna try and syringe a bit out myself but I wanted a written record of this issue I case the Cat does get clogged up. They replied saying check the oil hot. I understand that the dipstick has been calibrated for hot on some cars and cold on others, but due to thermal expansion wouldn't the oil level read higher once hot?

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Old 06-02-2013, 06:29 PM
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BigChuck
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if the oil level is way over the max, your cat is the least of your worries
Old 06-02-2013, 06:30 PM
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Brendan
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the oil can fun down the dip stick a bit if hot so looks lower than it is!

Last edited by Brendan; 06-02-2013 at 06:30 PM. Reason: typo
Old 06-02-2013, 06:38 PM
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ajamesc
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Oil level should be between min and max when cold to allow for expansion when hot
Old 06-02-2013, 06:40 PM
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DixieTheKid
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Originally Posted by ajamesc
Oil level should be between min and max when cold to allow for expansion when hot
Bang on! Dont let anyone tell you otherwise!
Old 06-02-2013, 07:13 PM
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geoffxr4
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Cheers for the replies. I wanted to send them a bit of an arsey reply but just wanted to check if people agreed that the oil should probably read higher when hot due to expansion?
Old 06-02-2013, 07:15 PM
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DixieTheKid
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If the engine is cold, the oil should not read above full. Make sure you wipe the dipstick and the car is level

Last edited by DixieTheKid; 06-02-2013 at 07:16 PM.
Old 06-02-2013, 07:24 PM
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RichieST
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As above, check when cold, surely that is the standard practice. When it is warm it will only go up!

Check what it says in the owners handbook just to confirm. I wouldn't go messing about with it or if anything goes wrong then they will just deny any responsibility. I'd be contacting them first thing in the morning to get someone out to sort it as too much oil can do just as much damage as not enough!
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