turbo diesel

[scooterboynz]

hi ya guys non bike related question here , just got a new work wagon , well not brand new but new-ish , its a 2001 holden rodeo 4x4 turbo deisel , my question is do i need to leave the engine running before i shut it down? it says nothing in the manual about this , i have been told that general running around in the suburbs is ok to turn it off straight away but on long trips or motorway driving it is advised to let it idle for a minuet or so ,,, why is this? does it let the turbo cool down slightly before the supply of oil is shut off? or something else, only had it a week and dont wan to stuff it!
cheers mike

[dangerous]

Wouldent worry bout it aye, early turbo's had seals made from differant materials than what they are today which ment if you had been giving it the beans then turn it off the oil in the turb would fry the seals..... so letting it run for a time allows cooler oil to cool the turb, things get bloody hot in there, now days by the time you have unbuckeled turn er off.

[marty]

if the manufacturer didn't deem it necessary to fit a turbo timer, i wouldn't worry about it. what does the owners manual say?

[scooterboynz]

if the manufacturer didn't deem it necessary to fit a turbo timer, i wouldn't worry about it. what does the owners manual say?

the owners manual said nothing , it only said about start up , "do not rev engine until oil pressure light has gone out , failure to do this can result in damage to turbo bearings" nothing about shut down?????????

[myvice]

Wouldnt bother. no need on modern engines.
Just keep up with the servicing.

[scooterboynz]

cheers to everyone on that, appreciate the help

[Motu]

Depends on how hard you work it,but it's just a 4x4 so it won't be working it's guts out all day.Around town you could just shut it down,if it's been doing a bit of work give it atleast a minute - I give my Pajero a minute after a long open road run,it doesn't work hard,and even if it does,it's seldom you shut down straight away.

[rfc85]

don't sweat it -moden turbos don't need the run down period that the old ones did- at the time u turn the engine off and lose oil pressure the turbo is still doing 10-12000 rpm and with out oil presure it will fuck it self in no time flat but as is said with the improvement in seals etc its not a problem any more

[Flyingpony]

I'd still install a timer or get into the habbit of letting it idle before shutting down.

[Biff]

Mitsi diesel engines were notorious for frying, especially the 4 x 4s and people carriers. Although fixed in their modern engines it was always advisable to let older models run for a minute or so after a long, hard run.

Doesn't help I know - but I'm as mechanically minded as a blind cobbler, so this post is simply to show people I know what a turdbow is.

[Motu]

Mitsi diesel engines were notorious for frying, especially the 4 x 4s and people carriers. Although fixed in their modern engines it was always advisable to let older models run for a minute or so after a long, hard run.

Doesn't help I know - but I'm as mechanically minded as a blind cobbler, so this post is simply to show people I know what a turdbow is.

Not gunna happen in Auckland though - I used to live less than 2km from the off ramp,with only 2 sets off lights....but they were alway red and heaps of traffic,so by the time I got home I'd already spent 5 minutes idling anyway,why do any more.The times you have the turbo red hot and want to shut down right then and there are very,very few.Work is 1/2 km from the off ramp after 90km of motorway running,but by the time I've opened the gate it's done it's idle down.

Mitsi's have a bad name,deservedly....but the turbos are ok - they die from 40,000km oil frying in the turbo....5000km oil won't do that.

[skidz]

By the time you get in your drive, it'll be right to shut down. ( unless you red lined it all the way home.)