Question for diesel auto owners who service their own car.

[COLVERT]

Originally Posted by KeithA

I don't tend to do my own oil changes these days.... Can't be bothered with the fuss of getting rid of the oil. Instead I just get the garage to do it at mot time, then do the test of the service myself. So I haven't observed this on a 75.

However, might it be related to the large oil capacity of the m47r engine? The void in the oil filter will be a very small % of overall capacity so it gets up to pressure very quickly?

Sent from my moto g(30) using Tapatalk

I don't think the oil capacity is a factor. If the sump was twice the size the filter would take the same time to fill. It mainly depends on the condition of the oil pump and if it's a refill from dry or after a normal drain down.--------

[COLVERT]

Originally Posted by clf

I have never heard of anyone starting a dry engine to add oil, but it would be the only way I can think of for an oil light to remain on for longer than normal with our engines (or any with a remote filter) after an oil change.

Actually prefer oil to whiskey (spelled correctly - search for Black Bush - dare ya )

Worn oil Pump ???

You can tell by the spelling spirits are foreign to me.---I can vaguely remember maybe 60 years ago having a Bacardi and coke or Vodka and lime but that's it.

Nowadays it might be the odd small bottle of beer once or twice a week.

[clf]

Originally Posted by COLVERT

Worn oil Pump ???

You can tell by the spelling spirits are foreign to me.---I can vaguely remember maybe 60 years ago having a Bacardi and coke or Vodka and lime but that's it.

Nowadays it might be the odd small bottle of beer once or twice a week.

the spelling depends on where the whiskey, or whisky is made

[Andy_with_a_screwdriver]

Originally Posted by COLVERT

I've never heard of anyone starting the engine after draining the oil and then trying to fill it with the engine running.--Blow back past the pistons would blow the oil straight back out of the filler cap. The oil light would never go out.---

However you. personally, would be very well oiled.---


Though I'm sure you would prefer whisky to oil.----

As anyone who started the engine after accidentally forgetting to put the oil cap back on can tell you

[buchanan]

I would be more worried if the oil light did not go out quickly, going out quickly it shows your oil pump is doing its job.

[patrolman pete]

Originally Posted by buchanan

I would be more worried if the oil light did not go out quickly, going out quickly it shows your oil pump is doing its job.

It's not going out quickly , it's going out instantly.

After asking the question ,it appears that no one has ever on any car , when going for the first start up after an oil and filter change, looked at the oil light and had to wait a couple of seconds for it to go out whilst it builds up the pressure !

My tourer behaves as any other car on first start after an oil change and then after goes out straight away on every other start up.

The connie and my mates mark 2 connie auto both go out in sync with the battery light which made me wonder if someone had been joining some wires behind the clocks to hide a fault.

There isn't a blockage in the engine as it would have seized, and there won't be pressure still in the engine before it's restarted so I'm not going to worry as we are both in the dog house after she failed her MOT .

[clf]

Originally Posted by patrolman pete

After asking the question ,it appears that no one has ever on any car , when going for the first start up after an oil and filter change, looked at the oil light and had to wait a couple of seconds for it to go out whilst it builds up the pressure !

I have, but only noticed this on engines with the oil filter mounted directly to the block, and not a remote filter as on the M47 or the Passat B5.5 pd 130 engine I had before.

[Mike Noc]

Originally Posted by patrolman pete

After asking the question ,it appears that no one has ever on any car , when going for the first start up after an oil and filter change, looked at the oil light and had to wait a couple of seconds for it to go out whilst it builds up the pressure.

I don't know about a couple of seconds Pete, but I get a slight delay when starting the engine after an oil change before the oil light goes out.

Originally Posted by patrolman pete

The connie and my mates mark 2 connie auto both go out in sync with the battery light which made me wonder if someone had been joining some wires behind the clocks to hide a fault.

If you are worried, pull the plug off the oil pressure switch and check to see if the oil light stays on after the engine has been started.

[HarryM1BYT]

If you think the oil light might be telling lies, just unplug it at the pressure switch = if light remains on, you can be reasonably sure it's doing its job..