GU 4.2 TD and Oil/Filter Changes

Submitted: Tuesday, Jan 17, 2006 at 21:08
ThreadID: 29805 Views:10819 Replies:6 FollowUps:4
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The GU 4.2 Patrol is supposed to have an oil change every 5000km and a filter change every 10,000km. This always seemed a little often to me as the oil itself looked fine. So I decided to send oil samples to Caltex at intevals for testing. Most of the oil suppliers do this sort of testing for about $30-40/sample.

My GU has done 220,000km but even after 20,000km the oil has plenty of capacity left according to Caltex and no metals or other contaminants. This saves me heaps of money and time only having to do oil/filters every 20,000km

This is not an advertisement but I do use Caltext Delo400 and Fleetguard filters so your mileage with your oil and engine condition may vary.

For those who ask Fleetguatd numbers are 43G00(rear)=LF3659 and 20N10(front)=LF3878 but best to check.

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Reply By: ACDC - Tuesday, Jan 17, 2006 at 21:35

Tuesday, Jan 17, 2006 at 21:35
That's all very well but what about your warranty! if it's not serviced as per book then warranty is void!! is it really worth it..
AnswerID: 149228

Follow Up By: Dave ....Adelaide - Tuesday, Jan 17, 2006 at 21:40

Tuesday, Jan 17, 2006 at 21:40
With 220000 ks on the clock i dont think warranty would be an issue for him............................Cheers .....Dave
FollowupID: 402392

Follow Up By: ACDC - Tuesday, Jan 17, 2006 at 21:54

Tuesday, Jan 17, 2006 at 21:54
So it's still not run in yet!
FollowupID: 402396

Follow Up By: jon jenkins - Tuesday, Jan 17, 2006 at 22:07

Tuesday, Jan 17, 2006 at 22:07
Yep I think they said ity all, at 220ks its well out but I agree while in warranty you have to do what the book says.

I actually had this discussion with Nissan because I had to so several oil changes on the side of the road while travelling and as long as you sign the book as having done the change they will accept that!

If you add up the costs of 10.5 litres of oil every 5k and genuine Nissan filters are exe too, the cost savings are worth a bit.

And its just starting to loosen up now, should be OK to take it up 4000rpm now :-)

FollowupID: 402401

Reply By: Member - Roachie (SA) - Tuesday, Jan 17, 2006 at 22:14

Tuesday, Jan 17, 2006 at 22:14
I've posted on here b4 about the Amsoil by-pass filtration system I use. I am now approaching the 20,000klm mark too since I last changed my oil. My 4.2 TD has only done 180,000klm. I used to change every 5000klm religously and even changed both filters at that interval too. Sure, it was expensive.....but it was the bloody huge amount of time I was spending under the truck that REALLY gave me the chits....about every 6 or 7 weeks. The bloke who set me up with this by-pass system has a GQ ute with about 180,000klm on the clock and has only changed the oil 3 times since he bought it new......goes as sweet as a dream.
Cheers.......long live the 4.2!!!!!!
AnswerID: 149239

Follow Up By: Member - Trevor R (QLD) - Tuesday, Jan 17, 2006 at 22:34

Tuesday, Jan 17, 2006 at 22:34

Your circumstances are different, but I saw a 78 series with 80000km on the clock getting it's first oil change done (oil come out in dollops, not good) but this vehicle was being "sent to market" as the owner said. Some poor sucker would see this one owner as a dream buy maybe???
Lets see what they think of it in a couple of years???
Me.... well I would like to think that if I decide to keep my truck it will go the distance (now close enough to 250000km) but if it does get sold, I would have no sleepless nights wondering if some nutter with a serious grudge of the vehicles ex owner would come knocking at my door.

Best Regards as usual.
FollowupID: 402407

Reply By: Exploder - Tuesday, Jan 17, 2006 at 22:24

Tuesday, Jan 17, 2006 at 22:24
That does sound High, But On the Amsoil Web sites the Stuff Roachie uses there recommended change interval is 25,000miles or once a year with there diesel Oil running a AMSOIL Ea™ full flow oil filter or Donaldson Endurance Oil filter so how about that maybe we are all changing the oil too often after all.

And that's not with a By-pass set up.

I would just be watching for any sludge build up under the Rocker cover, Have pulled the head off a Jeep Cherokee once and the top of the head up to the top of the valve sprigs was just filled with sludge from not changing the oil often enough.
AnswerID: 149242

Reply By: Ted (Cairns) - Tuesday, Jan 17, 2006 at 22:30

Tuesday, Jan 17, 2006 at 22:30
I always wondered about the 5,000km oil changes. I did change at 5,000 - in Europe, in winter, with a LJ73 with 2LT (2.4turbodiesel) engine. Cold starts there may mean -15degC. Cold start here is +30 degC!!! Engine size here is 4.2 naturally aspirated. Traffic there is stop-and-go. Here it's don't change gear for 200km.

It looks to me like engines here have a FAR more relaxed life. Of course, if you tow or race it or carry 1.5 tons or 0.5m high roof rack etc, then that's different again.

For my driving I'm happy with decent oil + decent filters every 10,000km - as per service specs for 1HZ.

BTW and slightly off-topic ;-) how often do you change on say prime movers over here?
AnswerID: 149246

Reply By: banjodog - Wednesday, Jan 18, 2006 at 07:14

Wednesday, Jan 18, 2006 at 07:14
For those who are interested, Repco Diesel oil is packaged by Mobil. I sent an email off to Mobil Aust last year (via the Mobil web site) for info and it’s the Mobil DELVAC MX 15W-40 grade – as stated by their senior chemical guy.

What Repco can’t do is state the oil is suitable for Mack, Volvo etc etc on the bottle like Mobil can. As Repco sell for $19.99 for 5 litres as compared to Mobil $29.99 for 5 litres – there’s a $10 save right there.

So over the course of the 5,000km interval changes the $10 savings adds up – well for me anyway. It’s $39.99 for the Repco 10 litre drum.

AnswerID: 149297

Reply By: bombsquad - Friday, Jan 20, 2006 at 01:08

Friday, Jan 20, 2006 at 01:08
I find it strange that the motor vehicle companies recomend a filter change at every second oil change. I think it was quoted in one of the 200 page ads you can buy (4wd magazine) as being like having a shower and putting your dirty undies back on.

Filters and oil are cheap compared to the consequences of missing services etc.......been bitten before, so will always err on the safe side. If oil testing costs 30 to 40 dollars, for me at least, the oil change doesnt cost much more.

I agree with Roachie, it depends how often you want to be under your car as well. I felt really good and also stupid after spending the money on some ramps and stands, along with the padded trolley you lie on under the car. I actually like getting under the car now, but that will wear off eventually.

Cheers Andrew
AnswerID: 149760

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