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[Mossy01482]

Hi people as I am new to a vauxhall omega please bear with me so bought my omega 2.5 auto 2000 about a fortnight ago decided to oil change when to the car got on my back had a rummage about no filter does it have one? Opened bonnet had a look and the only thing I can see is on the passenger  side about halfway a round Object with a big nut on the end surly if this is it its horizontal I love a spell checker if I slacked this off its going to leak all over the place plus it looks a right bugger to get too is it easy to get off and on ok? Thanks by the way checkers are not that good

[tunnie]

2.5 petrol or diesel?

Petrol filter is under the car, passenger side, right at the back. Probably a paper one, so it will have a metal lid/cap.

Diesel, it's in the engine bay. Somewhere 

[cam.in.head]

Yeah that's the filter. It's inside that canister so hopefully should unscrew but they have been known to spin the entire housing around rather than just the cap come off if someone before you has done it up too tight. They don't need to be super tight as it seals with an o ring rather than tightness.new o ring will be with new filter.easiest to access from underneath  with car on ramps

[DrAndyB]

Yep, 24mm (I think) hex socket and end cap should come off (assuming previous person has done correctly - I am the only one who has touched mine from new so all well  )

DON'T be tempted to put a square bit in the middle as they can crack get a proper socket in on it.

If treated properly should be fine and less messy I find and less risk of oil on Crank sensor 

It says Nm Torque setting on the cap - It aint much (I recall 5Nm ?) so respect the Torque wrench and DON'T swing off it when putting back on !

Book also says 10Nm for Sump plug (assuming its the Torx Head).

And as mentioned, replace O-Ring which should be with Filter - Original GM one only a few quid.

[Mossy01482]

Thanks for the input will have to get myself some car ramps  as the advert says see you craze guys around

[Migv6 le Frog Fan]

Ramps make life easier, but aren't essential. Car jacked up with an axle stand under the n/s should make the job doable, depending on your physical size. 

[Diamond Black Geezer]

Did my oil change 'tother week and happened to have the NS wheel off. Car jacked just enough, wheel off makes swapping filters a dream. Certainly no need for ramps.

PS Of course correct procedure with axle stands etc when working on a jacked vehicle goes without saying. If you want to use ramps, of course you can, but you can save your pennies for other tools/beer for now, that's all. 

[Doctor Gollum]

A spin on filter can almost be changed from above... removing the wheel is adding five bolts to a job with none

[New POD]

I may be paranoid, but if I use my ramps I put axle stands in place, just in case the rusty welds fail, and if I use my axle stands, I place the ramps under the sill, just in case I knock the car off them.

Scared myself once doing an engine mount on an mk3 XR3i. when the only thing that stopped me being crushed was the car being held in place because it was leaning on the garage wall. (and there was friction enough to stop it falling)

[Bigron]

If you take the wheel off and put an axle stand in place, the wheel can go under the car, for extra peace of mind. 

Ron.

[robson]

Yes Ron I always put the wheel under the car. Did you hear recently of a wife finding her husband crushed under the car. Take ever precaution when working under the car.

[raywilb]

A spin on filter can almost be changed from above... removing the wheel is adding five bolts to a job with none

  I did one last week as I mentioned in a post . changed it for a canister type.  easy to remove with filter removal pliers .

[Doctor Gollum]

A spin on filter can almost be changed from above... removing the wheel is adding five bolts to a job with none

  I did one last week as I mentioned in a post . changed it for a canister type.  easy to remove with hand

Fixed