diesel sedans

Submitted: Friday, May 26, 2006 at 16:21
ThreadID: 34297 Views:1659 Replies:5 FollowUps:11
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I am wondering if the same theory applies to diesel Peugeots and Volkswagons that the km's can be higher but be ok. Reason I ask is that I am looking at 2nd hand family car and with the price of fuel etc the diesel option (with their economy) looks like a good option. The problem is that they can be high in km's but still worth quite a bit. If the theory is the same that 300,000kms plus is acheivable then that isn't a worry.

Thanks,
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Reply By: Alloy c/t - Friday, May 26, 2006 at 16:34

Friday, May 26, 2006 at 16:34
A diesel is a diesel is a diesel ,, as long as servicing parameters are followed the same longevity is there,, on a side note a cousin was just recently in Germany , his company loan car was a 5yr old merc diesel with 380,000k on the clock.
AnswerID: 174936

Follow Up By: camship - Friday, May 26, 2006 at 20:06

Friday, May 26, 2006 at 20:06
I don't think I would buy any vehicle with over 300kms. Because it is not just the engine that has gone that far.
Also Euro car parts are frightfully expensive, so if anything goes wrong it becomes a very costly exersise.
Then you have the problem of trying to find someone else gullable enough to buy it from you.
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Reply By: Member - Oldplodder (QLD) - Friday, May 26, 2006 at 17:53

Friday, May 26, 2006 at 17:53
Have a friend with the peugot wagon, had it for a few years now.

5 to 6l/100k on the highway up and down to Brisbane.

Also goes to Charleville on a regular basis.

Reckons it is only just run in!
AnswerID: 174948

Follow Up By: Member - Oldplodder (QLD) - Friday, May 26, 2006 at 17:54

Friday, May 26, 2006 at 17:54
Forgot to add, another friend just ordered the Golf diesel with almost GTI specs, except for the engine. Looking at rechipping it, should really go with good economy.
Limited number coming in.

Sounds like a good car.
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Follow Up By: Exploder - Friday, May 26, 2006 at 19:30

Friday, May 26, 2006 at 19:30
Reckons it is only just run in!> Why do people always say that? If it’s got 100,000k on it, the engine has been run in for a long time Diesel or petrol, with 100,000k it’s been run in for like 98,000 of that 100,000.
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FollowupID: 431041

Follow Up By: GUPatrol - Saturday, May 27, 2006 at 16:23

Saturday, May 27, 2006 at 16:23
Exploder,

The reason is that at 100,000 kms a petrol is well worn, while a diesel is not, in fact if you ever have the chance to see both engines pulled apart side by side you'll see what I mean.
Petrol engines wear quicker not only because they are not as strong but the main reason is the fuel, and the residue it leaves behind as it burns.
Diesel is an oil and the combustion is so different that the rings, pistons etc don't wear at the same rate.

at 300,000 kms, a diesel cylinder will still have the honing marks visible, while the petrol has a lip on top of the cylinder, the cylinder would have ovalised and would be using a lot of oil.
Try to get the milage that buses and trucks get out of a diesel on a petrol...
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FollowupID: 431134

Follow Up By: Exploder - Saturday, May 27, 2006 at 18:27

Saturday, May 27, 2006 at 18:27
true, but diesels are also built Heavy as they have higher comp rations, Higher combustion pressures and so on and that’s why the generally lasts longer and I am not saying they don’t, but people who say at 100,000k it’s only just run in Humm.. I don’t think so; I don’t think Detroit, MTU and so on bench run their engines for 1000Hrs before delivery.

Still seeing the Honing marks >agree but depends on how it’s been treated, if it had a hard life it can be glazed and have big mother Ring ridge at the top, taper and ovalety in the cylinder as well.

Petrol or Diesel you need to run it in from the word go, yes diesel will take a bit longer but not 100,000k.
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FollowupID: 431147

Follow Up By: Member - Oldplodder (QLD) - Saturday, May 27, 2006 at 19:17

Saturday, May 27, 2006 at 19:17
I have always found that a new engine is run in (rings bedded in) when oil consumption drops to almost nothing between changes.

Didn't happen until my diesel pajero had 70,000k on the clock.

At 263,000, it is only just starting to use some oil between oil changes again. Half a litre per 5000k at the moment.
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FollowupID: 431156

Reply By: WDR - Friday, May 26, 2006 at 19:16

Friday, May 26, 2006 at 19:16
The logic of diesel in the city escapes me.

Say - $5000 cost premium on new car.
Diesel is more expensive than petrol
The killer - servicing at 5000 intervals with associated costs
High cost of repairs if necessay

vs

Great fuel consumption.
Better resale value
Longevity

Obviously it benefits vehicles using at least 35000 k per annum - Surely the payback on others is sus!!
AnswerID: 174965

Follow Up By: Exploder - Friday, May 26, 2006 at 19:24

Friday, May 26, 2006 at 19:24
Not with new diesels< the Land rovers have like a 20,000k drain intervals I believe.

Good oil Combined with Good filters and even centrifugal filters as well.
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Follow Up By: chump_boy - Saturday, May 27, 2006 at 12:13

Saturday, May 27, 2006 at 12:13
The new diesel cars are 15-20k km servicing, and the citroen we are looking at is $3000 more than the petrol. The Peugeot is about $3500, but also has a 6 speed gear box, ESP and traction control.

If you look at 25,000km, diesel at $1.50, petrol at $1.35, diesel getting 6L/100km, petrol getting 8L/100km:
Diesel = $2250/year
Petrol = $2700/year

Resale should be about $2000 - $3000 more than a petrol, so when it is all added up, and a slightly increased serving interval is factored in, it is all about the same.
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FollowupID: 431113

Follow Up By: Member - MrBitchi (QLD) - Tuesday, May 30, 2006 at 08:40

Tuesday, May 30, 2006 at 08:40
So in the first year you save $550 in fuel. At that rate it will take about 6 years to make up for the extra 3-3.5K purchase price. And then you need to factor in the increased service costs for a diesel over petrol. Yes the interval may be the same but the overall cost of servicing will be dearer.

Have to agree with WDR on this one. Only makes sense for very high mileage units.
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Reply By: Member - Phil G (SA) - Saturday, May 27, 2006 at 18:47

Saturday, May 27, 2006 at 18:47
The modern petrol motors seem to be good for as many km as a diesel. If you look after both of them, they outlast your period of ownership. And many petrol vehicles are more economical than they used to be.

We bought an X-trail as the second vehicle recently - first trip to Melbourne got 8.1 l/100km - not bad for a 132kw 2.5 litre motor. Previous vehicle was a 1.6 litre Pulsar that would get 6.3 l/100k on the same trip. Why buy diesel on a conventional vehicle?

Diesels are popular in countries where the cost of diesel fuel is less than petrol. Sadly, thats not Australia.

Cheers
phil
AnswerID: 175090

Reply By: Middle Jeff - Monday, May 29, 2006 at 22:16

Monday, May 29, 2006 at 22:16
Hi Gossy

We have a Pug 307 petrol and will trade it at the end of next year for a TD one. We just went to Melbourne in ours and averaged about 6lts per 100 on premium fuel the TD will do the same trip well under 4lts per 100.

But I would not buy one of these things out of warrenty, better of buying a corolla.

Have fun
AnswerID: 175542

Follow Up By: Gossy - Wednesday, May 31, 2006 at 11:51

Wednesday, May 31, 2006 at 11:51
I have been away sick from work so only just caught up on the forum. Are you saying that they are not reliable (your warranty comment) or just expensive to bet fixed (or both!).

ta,
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Follow Up By: Middle Jeff - Wednesday, May 31, 2006 at 20:06

Wednesday, May 31, 2006 at 20:06
Hi Gossy

We love our pug but it has been through two sets of front disk rotors in 18 months (they warp) and everything on the car is run by a computer, brakes, throttle, lights, wipers. The parts are no more expensive than jap cars, it is a myth that european parts are more expensive. The problem with euro cars are they are just to high tech and the finnish inside will just not last in aus.

Have fun
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FollowupID: 432041

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