Diesel engine life

[Squalo]

Originally Posted by EDManual

Yes 240k is terrible for what a diesel should traditionally be. Whats the point in paying extra for one in the first place, they were always meant to do double the km of a petrol (exept falcon 6's of course).

The 240k is not referring to when an engine blew up, it's the mileage on the vehicle the OP is looking at. My comment means that mileage isn't a big deal.

Originally Posted by EDManual

The only modern ones that may last are the v8 diesel landcruisers.

You might be surprised at how many of those V8s are having issues... the most robust diesels out there are the six cylinder Landcruisers and Patrols (specifically the TD42 for Patrol, the RD28 does cranks when the harmonic balancer fails).

[mechanic]

"Something like an NA HZ engine will last forever but what are they like to drive ?" SumoDog68

Absolute rubbish is what they are like to drive. I bought one after having Pajeros and a Hilux with a 253.
Sold it as soon as possible. They were basically the last gasp of Toyotas mining vehicles where they're flogged around mine sites as they have a fairly trouble free engine.
Mine had to have the pump and injectors replaced and a new clutch before it got to 100,000 klms.
Discontinued now, one of Toyotas smartest moves.

[waterskier]

Currently have 262,000km on a 2013 auto 2.8ltr RG Colorado . Zero issues so far, just ordered a new timing belt from Holden for $300.00 that the manual states should be changed at 150k.

[383hq]

Interesting comments
I did have a diesel ranger that was great - sold it at 100k k km(only just run in ?)
Fuel economy was the issue, or should I say tank size?
Chassis was nervous on dirt @120-130k km/h with heavy bull bar over the nose. Seemed inclined to want to try to swap ends...

Bought a diesel mondildo turbo for highway km's.
What dr terry says is bang on
Great highway fuel economy, but potential:
turbo failure/ wear out = big $, same for
diesel fuel pump failure = big $
injector replacement = big $

You get the idea, we trade (compromise) criteria

Recent factory service had $600 in "special" DCT trans oil on the mondildo, so
Economy has come at a cost - it's all a compromise....

(at 140k km now, wondering how good the engineers were with their 10 yr 200K design limits generally accepted nowadays :-)
On the plus side - mondeo seems to handle small kangaroo much better then big kangaroo v ranger with steel bull bar...

I believe newer more modern diesels have much better fuel economy = finer tolerances = wear out more quickly then the older landcruiser style 400,000km type donks.

I cannot confirm this with data - never kept them long enough - worried about the component costs (as others have indicated).

[Mont5.0]

I believe Direct injected diesels seem to have less issues than common rail, Look at Trucks.

[Pis-ton broke]

i hear that the common rail diesel is sensitive to poorer quality diesel fuel, is this true? and this is why "special diesel" is for sale. and that its expensive to repair a stuffed fuel system.

[Itsme]

Originally Posted by Pis-ton broke

i hear that the common rail diesel is sensitive to poorer quality diesel fuel, is this true? and this is why "special diesel" is for sale. and that its expensive to repair a stuffed fuel system.

Never known any diesel engine to be cheap on repairs or parts whether old or new technology, something people should consider before purchasing.

[.:4:.]

Originally Posted by Pis-ton broke

i hear that the common rail diesel is sensitive to poorer quality diesel fuel, is this true? and this is why "special diesel" is for sale. and that its expensive to repair a stuffed fuel system.

From what I know, (I have only had a diesel for a month, however me wife has owned a direct injection turbo petrol for a couple of years ) direct injection places the injector into the cylinder head, and only injects fuel at the end of the compression stroke, iliminating the chance of detonation due to premature detonation caused by friction . On petrol models it can sometimes lead to buildup on the intake valves as there is no fuel (solvent) running over them, also in a turbo you can run higher compression as the fuel isn't injected until right before it's ignited

[Trump]

Originally Posted by .:4:.

From what I know, (I have only had a diesel for a month, however me wife has owned a direct injection turbo petrol for a couple of years ) direct injection places the injector into the cylinder head, and only injects fuel at the end of the compression stroke, iliminating the chance of detonation due to premature detonation caused by friction . On petrol models it can sometimes lead to buildup on the intake valves as there is no fuel (solvent) running over them, also in a turbo you can run higher compression as the fuel isn't injected until right before it's ignited

The build-up is cleaned by putting an upper engine cleaner through it.

[Franco Cozzo]

Originally Posted by Pis-ton broke

i hear that the common rail diesel is sensitive to poorer quality diesel fuel, is this true? and this is why "special diesel" is for sale. and that its expensive to repair a stuffed fuel system.

You're now injecting fuel at 25,000PSI and upwards.

Which is why components are expensive, but mind you what car is cheap to fix anyway?

Direct injection petrol engines will also have relatively expensive fuel injection components too vs regular multipoint injection setups only running 45-60psi fuel pressure.

Ive got a TDCI Focus, its just clocked 100,000km and I've sent it down the 1/4 mile 6 times, had it tuned, bigger intercooler and at one stage was rocking a bigger turbo and sat through 90+ different tunes run up on the dyno, thrashed it over every single one of those 100,000km and it hasn't let me down yet, and does 5.7L/100km.

The only significant failure I've had was it killed a battery at 14,000km and blew the injector return line in 2012 which was a little clear plastic pipe.

Oh and I chopped out the OEM tyres at 25,000km.

People complain about servicing costs, the genuine oil filter is $20 and the oil is what any group IV synthetic costs for everything else.

[.:4:.]

Originally Posted by Loud_Noises

The build-up is cleaned by putting an upper engine cleaner through it.

Haven't had any issues yet as the wifes car has only done 60k and my ranger has a tad under 50k on it, but I suspect the build up is due to the pcv

[sprintman1]

Originally Posted by Pis-ton broke

i hear that the common rail diesel is sensitive to poorer quality diesel fuel, is this true? and this is why "special diesel" is for sale. and that its expensive to repair a stuffed fuel system.

Damn right it is on modern diesels. One shop I know here average 3 rebuilds a week at an average cost of $8,000 per rebuild purely due to the abysmal std of diesel fuel storage/shipping in Australia.

[SumoDog68]

Originally Posted by Big Damo

You're now injecting fuel at 25,000PSI and upwards.

Which is why components are expensive, but mind you what car is cheap to fix anyway?

Direct injection petrol engines will also have relatively expensive fuel injection components too vs regular multipoint injection setups only running 45-60psi fuel pressure.

Ive got a TDCI Focus, its just clocked 100,000km and I've sent it down the 1/4 mile 6 times, had it tuned, bigger intercooler and at one stage was rocking a bigger turbo and sat through 90+ different tunes run up on the dyno, thrashed it over every single one of those 100,000km and it hasn't let me down yet, and does 5.7L/100km.

The only significant failure I've had was it killed a battery at 14,000km and blew the injector return line in 2012 which was a little clear plastic pipe.

Oh and I chopped out the OEM tyres at 25,000km.

People complain about servicing costs, the genuine oil filter is $20 and the oil is what any group IV synthetic costs for everything else.

What sort of quarter does it run out of interest ?

[Franco Cozzo]

Originally Posted by SumoDog68

What sort of quarter does it run out of interest ?

I ran a 16.32 @ 80mph as my fastest time

I'm torque limited on my first 3 gears though, I don't have the full beans until 4th gear unfortunately.

[mik]

Originally Posted by trublu

Never known any diesel engine to be cheap on repairs or parts whether old or new technology, something people should consider before purchasing.

true but it depends on the brand , years ago we used to talk/laugh about this stuff with big diesels ,
rebuild kit for a euro volvo engine only 5k ........... injector pump 20 k
american old style engine , 500 to 1000 bucks for a pump rebuild, rebuild kit 3 - 5 k .
and some of the old simple engines where rated for a million miles .
id be surprised to see too many of the little modern buzzy ones even making 400 k, happy to be proven wrong though.

[Itsme]

Originally Posted by mik

true but it depends on the brand , years ago we used to talk/laugh about this stuff with big diesels ,
rebuild kit for a euro volvo engine only 5k ........... injector pump 20 k
american old style engine , 500 to 1000 bucks for a pump rebuild, rebuild kit 3 - 5 k .
and some of the old simple engines where rated for a million miles .
id be surprised to see too many of the little modern buzzy ones even making 400 k, happy to be proven wrong though.

With proper servicing & maintenance I think 400 to 500K is quite achievable, depends on how they are treated by their owners.