GU 4.2 TD and Oil/Filter Changes

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..

Jon,
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!!!!!!
Roachie

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.

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?

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.

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