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[twiglet]

Been thinking for a while about getting one as a replacement for my aging Cavalier 1.7TD that I use for work.

Something like this one...

http://www.ebay.co.uk/itm/2000-VAUXHALL-OMEGA-CDX-TD-SILVER-/170694336886?pt=Automobiles_UK&hash=item27be2ce176

3 questions really...

How many miles are the engines and gearboxes good for if they are regularly serviced? I know other bits will wear out, but they are easily replaced from other, non-diesel Omegas

Putting aside personal preference, with transmission works best with the 2.5TD engine in terms of longevity, reliability, performance and economy. Manual or Auto?

Has anyone any experience of running one of these engines on waste vegetable oil?

TIA 

[Seth]

Specifically:

The X25DT lump will confidently achieve inter-galactic mileages PROVIDING IT'S BEEN REGULARLY (AND CORRECTLY) SERVICED.

Manual-boxed versions are by far the best option.
All auto-boxed cars that I've been involved with have been pretty crap in terms of performance and fuel economy.

TDs run best on 'non-supermarket' diesel.
Personally, I'd avoid the veggie juice!

The above based on my own experiences!



HTH

[twiglet]

Thanks Seth. 

If I can't get one running on veg oil, it's gonna be a non-starter for me. I do 400 miles a week getting to work and back and the Cavalier is currently returning 100 mpg on a 50/50 mix. Perhaps I'd be better off looking for another clean Cavvy and just enjoy my Omega at the weekends.  :-/

[Seth]

It MIGHT be okay on the veggie stuff - but, well ........  :-/

Here's my proven fuel consumption figures, and they're for an extremely well-maintained example that's used primarily within The Valleys' difficult terrain:

* Purely local = 33mpg
* Spirited (and well-laden) cross-country = 40mpg
* Motorway cruising @ steady 70/75mph = 44mpg
* Towing our 23ft caravan varies between 23/26mpg

There you have it ......... 

[twiglet]

Well those figures look promising. 

Am I right in thinking that this engine is an indirect injection?

[Seth]

Well those figures look promising. 

Am I right in thinking that this engine is an indirect injection?

Yep!

[TheBoy]

Firstly, I'll say I prefer auto Omegas.  Most here know I'm really not a fan of the Omega manual box. And a large exec car should be an auto.

But if I were to get another diesel Omega, I'd never have another auto, it would have to be manual.

Specifically the TD, its gutless without a chip. Consider the chip a must.  Many on here use the chips from the chap that Omegatoy and I used, with consistent results.  The 427 chips (manual, around 1997 onwards) do, however, seem to have a stutter around 1500 rpm, which equates to about 47mph in top.  We (chip guy and I) suspect the 428 (auto from around 1997) suffers the same, but autobox masks it.

If you do chip, our experience is the MPG improves (by manually calculating) probably in the region of 10+%, but the MID overreads by a significant margin.

[Omegatoy]

it will run 50/50  on well filtered clean veg oil quite happily, however if it aint clean say goodbye to your intank pump.
veg oil also tends to clean up the pump fbw system after a long period,but some do go quirky, strange thing is some do suffer and some dont,
bad news fr you is at that mileage per week
I would be changing the engine oil and filter every 7 weeks dont do it and the engine will shag its plastic tensioners on the timing chain in short order, max is every 4.5k on this lump better is every 3 k.
other than that, they tend to shag front springs around every 60k not break them just go soft owing to the weight of the lump,water pumps with plastic impellor are bad news as they break, replace with metal impellor and forget, rads can silt up and running temp get a bit high, i.c fan seizes up owing to non use, run seperate switch to power it makes a difference to power and inlet temps,
thats most of it, damn good motor!!

[hoofing it]

If you are serious about replacing the cavy with a tractor go and see the mig your going to buy and do the paperclip test to see what faults are lurking i'd wish I done it as it cost me about £2k to fix.
If code 34 shows walk away new pump required.
Apart from that it was a lovely car to drive but if your commuting to work keep the cavy I got around 35-40mpg driving like Miss daisy