Changing oil using oil change pump.

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boristhespie
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Changing oil using oil change pump.

Post by boristhespie »

Hi

Bought an oil change pump fae Lidls a while gack. Needing oil changes in both 06 136bhp HDI mk2 Citroen and also a 04 hdi 1.6 C4, however I read somewhere that I should not use a pump to remove oil from Citroem engines. Some saying it wouod affect the turbo? I thought I would ask the experts so...Can anyone advise if it is okay to use the pump (which goes down the dipstick tube) to remove oil? Has anyone done it?
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Re: Changing oil using oil change pump.

Post by JohnD »

Several years ago Citroen published a warning notice to their dealers telling them not to use suction oil removal from sumps of 1.6 diesel engines otherwise deposits left behind would eventually damage the turbo. However my guess is that in smaller garages where time is of the essence, the method is widely used. Especially on cars where there's a sump shield to remove first. As for myself, on my 2ltr engine I do my own oil changes so I remove the sump shield and drain the oil.
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Re: Changing oil using oil change pump.

Post by EDC5 »

Yes, I think that the oil capacity of the 1.4 and 1.6 engines is so low that you really need to ensure that all of the oil is removed before adding new; hence the advice againstg the pumps that may not reach the very bottom of the sump.

However, and this is my opinion, if you absolutely had to use the oil change pump you could do a double oil change. Pump old oil out, add in fresh, run engine for a few mins, pump oil out again then finally refill with fresh.
That way you'd clear a lot more of the residual oil from the engine which is a concern for these engines and the reason why Peugeot / Citroen prefer people to drain the sump properly.
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Re: Changing oil using oil change pump.

Post by boristhespie »

Thanks. Think I will leave C4 to garage. How about the C5, same advice?
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Re: Changing oil using oil change pump.

Post by wurlycorner »

I really don't like the idea of these things. Fully draining from the sump has to be the best to do it.
Is there a particular reason why you can't do it that way?
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Re: Changing oil using oil change pump.

Post by white exec »

Garages often use these pumps for sheer speed (ie profit) - and what better way to skimp on this service operation, because it leaves no obvious trace. 8-)
Interestingly, mechanics I know don't do it on their own cars.
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Re: Changing oil using oil change pump.

Post by MikeT »

I tried the syphon pump on my C5. Both times I dropped the sump plug after and found it perfectly clean - not a drip to be seen.
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Re: Changing oil using oil change pump.

Post by wurlycorner »

It's more that it won't remove any of the sludge/debris that collects at the bottom of the sump over time (which draining via the plug will flush with it) or allow a magnetic drain plug to be cleaned.
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Re: Changing oil using oil change pump.

Post by Hell Razor5543 »

When I get (to me, at least) a new car I will do an oil change soon afterwards. I will use a 'sludge buster' additive, in the hope of breaking down and removing any sludge that might have formed. I DON'T know if it works, but I have not seen any sludge in that or subsequent oil changes.
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Re: Changing oil using oil change pump.

Post by MikeT »

wurlycorner wrote: 15 Aug 2018, 13:28 It's more that it won't remove any of the sludge/debris that collects at the bottom of the sump over time (which draining via the plug will flush with it) or allow a magnetic drain plug to be cleaned.
My concern (on the delicate 1.6 engine) is that the sump plug thread upward recess is also a restriction to effectively removing heavier deposits. Alternating between draining and syphoning perhaps offers the best of both?
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Re: Changing oil using oil change pump.

Post by Hell Razor5543 »

MikeT wrote: 15 Aug 2018, 14:21
wurlycorner wrote: 15 Aug 2018, 13:28 It's more that it won't remove any of the sludge/debris that collects at the bottom of the sump over time (which draining via the plug will flush with it) or allow a magnetic drain plug to be cleaned.
My concern (on the delicate 1.6 engine) is that the sump plug thread upward recess is also a restriction to effectively removing heavier deposits. Alternating between draining and syphoning perhaps offers the best of both?
I used to have a 1.6l Peugeot Partner van. When it was serviced the mechanic would Jack up the van on the opposite side from the sump plug (and it would be jacked up very high). That way more of the oil coild be removed via the sump plug.
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Re: Changing oil using oil change pump.

Post by wurlycorner »

MikeT wrote: 15 Aug 2018, 14:21 My concern (on the delicate 1.6 engine) is that the sump plug thread upward recess is also a restriction to effectively removing heavier deposits.


Argh, I didn't realise it was like that - so it screws into a boss that's mounted inside the bottom of the sump?

Any pics?
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Re: Changing oil using oil change pump.

Post by white exec »

Like many big organisations, the boss often ends up on the wrong side of things... ](*,)
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Re: Changing oil using oil change pump.

Post by Gibbo2286 »

With proper maintenance time and modern oils there should be no sludge build up, detergent oils hold the rubbish in suspension and it's picked up by the filter in use and comes out with the oil when drained.
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Re: Changing oil using oil change pump.

Post by Paul-R »

[pedant]
Mmmmm, detergent oils hold fine sludge in suspension until the next oil change. The filter is there for the relatively larger items.
[/pedant]
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