2 different cars, 2 oil changes, both came up short

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Welly
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2 different cars, 2 oil changes, both came up short

Post by Welly » Mon May 14, 2018 7:44 am

Actually 3 oil changes over the last two weekends but the Twingo behaved itself (apart from disgracing itself with a weepy sump washer).

My point is having drained (very drained) both the Citroen HDi and the Volvo, changed oil filter cartridges, and refilled using EXACTLY the manufacturers oil capacity; both cars showed a shortfall on the Dipstick :? they were both reading about 80% full and always on dead-flat ground after hours of resting.

I'm not too bothered about it but it did leave me feeling like I should top them up to "full" on the dippy.

Any thoughts out there?
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2005 Volvo S40 T5 a bit pampered
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stevewalsh
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Re: 2 different cars, 2 oil changes, both came up short

Post by stevewalsh » Mon May 14, 2018 7:56 am

Max and Min on stick are just that. I always like to run mine a few mm below max.
Many many years ago I was a powerboat mechanic, and due to different angles of engine installation or operating conditions we found that in severe cases with a very full sump the crank would splash in the oil, causing foaming, lack of performance, aerated oil entering the lube system, causing all sorts of probs. Not such a problem on road cars but thing stick in your mind from years of experience

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Re: 2 different cars, 2 oil changes, both came up short

Post by piglet » Mon May 14, 2018 9:53 pm

I don't fill the TUD5 more than 1/2 on the stick.
Leaks if it's full.
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Re: 2 different cars, 2 oil changes, both came up short

Post by jasper5 » Tue May 15, 2018 6:34 pm

Welly wrote:
Mon May 14, 2018 7:44 am
Actually 3 oil changes over the last two weekends but the Twingo behaved itself (apart from disgracing itself with a weepy sump washer).

My point is having drained (very drained) both the Citroen HDi and the Volvo, changed oil filter cartridges, and refilled using EXACTLY the manufacturers oil capacity; both cars showed a shortfall on the Dipstick :? they were both reading about 80% full and always on dead-flat ground after hours of resting.

I'm not too bothered about it but it did leave me feeling like I should top them up to "full" on the dippy.

Any thoughts out there?
Is this the oil level capacity including the oil filter or without?

This may be the reason for the shortfall.

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Welly
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Re: 2 different cars, 2 oil changes, both came up short

Post by Welly » Wed May 16, 2018 7:46 am

Yes it was including the filter replacement, all quantities as per the manual.

1.6 HDi was 3.8 ltrs

Volvo was 5.8 ltrs
Cars in my care:

2005 Volvo S40 T5 a bit pampered
2010 Citroen C4 1.6 HDi turbo de' explosions
2010 Renner Twingo refreshingly simple

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Doggy
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Re: 2 different cars, 2 oil changes, both came up short

Post by Doggy » Wed May 16, 2018 1:02 pm

I sometimes wonder if you're on the level Mr Welton.

Seriously though, I've done many an oil change on mine - sometimes I have about half a litre left over from 5l, sometimes it swallows the lot. Only thing that makes sense is if the quantity indicated on the container varies a bit, or something.
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Welly
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Re: 2 different cars, 2 oil changes, both came up short

Post by Welly » Wed May 16, 2018 1:47 pm

To be fair I'd rather keep the level just below Max because max really is max so why risk going near it.

Conversely if most folk took a car to a garage for an oil change and saw it was short of max they'd likely complain they'd been short-changed. Perhaps garages over-fill cars for this reason. Be interesting to hear what Jasper used to do.
Cars in my care:

2005 Volvo S40 T5 a bit pampered
2010 Citroen C4 1.6 HDi turbo de' explosions
2010 Renner Twingo refreshingly simple

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Re: 2 different cars, 2 oil changes, both came up short

Post by jasper5 » Wed May 16, 2018 4:21 pm

Welly wrote:
Wed May 16, 2018 1:47 pm
To be fair I'd rather keep the level just below Max because max really is max so why risk going near it.

Conversely if most folk took a car to a garage for an oil change and saw it was short of max they'd likely complain they'd been short-changed. Perhaps garages over-fill cars for this reason. Be interesting to hear what Jasper used to do.

I have a method of filling and engine with oil....
Put in 3 litres then start the engine until the oil light goes out ...wait a minute then check the level, top up in half litre stages until the level is between min and max then wait a couple of minutes before checking again.
Finally top up to the max line...unless the car is a Volvo diesel then I would leave it between min and max as there have been problems with engines running away after diesel gets in the oil and raises it to a dangerous level.

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Re: 2 different cars, 2 oil changes, both came up short

Post by caprixpack » Wed May 16, 2018 5:04 pm

Modern cars :roll: with the 924 drain the oil change the filter prop the oil can up with the spout in the filler hole wait for the can to fully drain then cap back on and done. None if this 3.75lt or 4.25lt nonsense like the passat or other cars I've had. A 5lt jug of oil takes it right up to the fill line on the dip stick, it's the same every time.
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Re: 2 different cars, 2 oil changes, both came up short

Post by Bailes1992 » Wed May 16, 2018 5:26 pm

My experience with the PSA 'DV' engines is they always seem to take exavtly 4 litres to the max line.

I get the feeling a lot of manufacturers list the maximum capacity as being somewhere in the middle of min and max, maybe to stop people getting it seriously wrong?
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Re: 2 different cars, 2 oil changes, both came up short

Post by piglet » Thu May 17, 2018 10:15 am

Just looked up the 3.0tdi, 8.2l,,, better start saving.
I'm guessing that's just so Audi can achieve 2yr/20K service interval, at the expense of engine life of course.
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Re: 2 different cars, 2 oil changes, both came up short

Post by caprixpack » Thu May 17, 2018 11:54 am

2 years or 20k is a crazy amount of time / distance for oil no matter how good or well developed it is. Our passat is on 10k oil changes and the 924 is changed every 6 months.
1984 924 2.0 n/a crystal Green - The daily
2005 VW Passat tdi 130 Highline, now 170bhp & 290ft/lb
2000 Peugeot 406 2.0 hdi - stood for 4 years, fresh mot and mostly working.

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Welly
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Re: 2 different cars, 2 oil changes, both came up short

Post by Welly » Fri May 18, 2018 9:32 am

Bailes1992 wrote:
Wed May 16, 2018 5:26 pm
My experience with the PSA 'DV' engines is they always seem to take exavtly 4 litres to the max line.
Bang on that man! the 3.8ltrs is just short of max.
Cars in my care:

2005 Volvo S40 T5 a bit pampered
2010 Citroen C4 1.6 HDi turbo de' explosions
2010 Renner Twingo refreshingly simple

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