Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Omega 37]

Took my nissan juke diesel in to the dealer for its first service.
The oil was black and thin as you would expect. Picked it up and drove 5 miles home.
Checked the oil to find it was still black and thin!!!!!!!!!!!!

Never had a diesel before, is this normal?

[Diamond Black Geezer]

urghh...... trickyyy. My own personal experience says that there should be a bit of an improvement in the oil colour, but invariably they go sooty almost immediately. Would like to say that if they drained it thoroughly (as most dealers etc don't, just whack the plug back in soon as it starts to slow, get them out, and the next one in, save time etc) then you'd get an improvement, but in truth probably almost imperceptible.

Basically Diesels are mucky engines. But I hope you've had an oil change! 

[Kevin Wood]

I wouldn't expect it to be as black as soot after that short a distance.

Worth having a look around the filter? Filter should be clean externally, and I'd be surprised if there wasn't a bit of oil around it as evidence that it's been changed. Ditto the sump plug, although they may have just sucked it out through the dipstick tube.

[Andy B]

I wouldn't expect it to be as black as soot after that short a distance.

Worth having a look around the filter? Filter should be clean externally, and I'd be surprised if there wasn't a bit of oil around it as evidence that it's been changed. Ditto the sump plug, although they may have just sucked it out through the dipstick tube.

I used to do the oil on my Astra diseasal about every 5000 miles. The new oil was black by the time I'd driven it around the block.  And many places do suck th eoil out these days ....... easier and no under engine panels to remove

[Kevin Wood]

Fair enough. Not done too many tractor oil changes, thankfully, so I have limited experience.

[Diamond Black Geezer]

Yes, as you say, try and check for signs of disturbance. But that depends on how familiar you were with the 'looks' of it pre-oil change.

I know where the leaks and marks / stains are on my engine block, I was under there only the other week, if I climb under there today I'd recognise a new leak straight away. But that's pure happen-stance, as I was doing the gearbox oil recently. Not sure how you'd conclusively tell on a near-brand-new vehicle.

Also the sucky sucky method is used a lot now, as said. Not good, in my humble... but as every year passes mechanics become cleaner and cleaner until one day they will only know how to install and reprogramme new black boxes, engines will be sealed for life, no ability to change the oil unless you send it to a specialist.

[zirk]

New Oil Filter?

[KSR]

Not on a first service. Should'nt be that bad  on a new diesel.


check around the filter housing and look for any spill marks around the filler neck

[Diamond Black Geezer]

Must be the easiest and oldest trick in the book for car garages, charging for an oil change, without doing one... 

Not saying this has happened for sure, in this instance, but it really is the easiest thing in the world to lie about.

[Omega 37]

Its done 14k. No sign of oil or oil spillage being wiped off either sump plug or filter area.
Filter is on the front of the engine high up. Hoses in the way. No way you could get it off without making a mess 
not happy

[KSR]

Its done 14k. No sign of oil or oil spillage being wiped off either sump plug or filter area.
Filter is on the front of the engine high up. Hoses in the way. No way you could get it off without making a mess 
not happy

take it back..................

[Diamond Black Geezer]

Seconded.

[Kevin Wood]

Even if new, if the filter has done 14K in an engine bay, it will have a layer of grime on it. Run a finger over it and see if it comes off clean - assuming it's a cartridge filter, of course.

[Omega 37]

They say the filter was booked out and 4.6 litres of oil was dispensed from the machine so it was done. end of
They also say that even with an engine flush the oil still goes black quickly.
I will do myself for peace of mind.
Filter looks dirty to me.

[05omegav6]

Booked out and fitted are two different things...

They probably did change the oil though...