Caltex Delo 400 Multifleet

[Betz]

This seems to be a popular oil around the traps so going to give it a go at $90ish delivered for 20L

I got the paj (NM 2.8tdi) 3 years ago and started with Penrite HPR Diesel 15 which I found rattley on start up so quickly went to HPR Diesel 5.

A good oil I thought and as I do changes every 5,000ks it was working well, a few times I went to 6,000 and 7,500ks between changes over the last 2 years and noticed slow and smokey startup, oil reporting at rocker cover, rear pcv and sump area but no oil on the driveway and a bit of consumption.

At these times I found the oil to have sheared badly, either full of fuel or oil viscosity breakdown it was like water coming out so its time to try something else....

After a lot of googling for specs etc it came down to Delo 400 or a Komatsu fleet oil which is likely the same thing lol.

Prepared for this a while back and ran a can of Seafoam through the fuel tank and 100ks from empty put a can of Seafoam in the crank case.

Seafoam is simply a proven yank additive like we can buy at Suercheap or Autoarn, I think they are all mostly Naptha.

I ran LiquMoly Diesel purge through the injectors just before dropping the old Pentrite oil and changed the glow plugs (which looked ok) The oil looked crap but not as bad as it has been in the past (this time it had only done 3,800ks)

New filters all round and the Delo 400 and the old girl is starting and purring nicely. I really believe diesels love oil and viscosity so no real surprises there.

So far so good with 100ks logged, everything as smooth as it has ever been engine wise which is a bonus as it has been increasingly agricultural over time.




Will report further

[Aussie_Dan]

HPR Diesel
At these times I found the oil to have sheared badly, either full of fuel or oil viscosity breakdown it was like water coming out so its time to try something else....

I am not surprised. I was using HPR diesel 15 in my 3.2 and It suffered exactly what you have discovered.
I changed to Mobil Delvac nearly 3 years ago and have not looked back.
I my opinion, HPR diesel is expensive rubbish....
Cherrs, Dan.

[schnitzel]

Komatsu fleet oil is basically rx super. Delo 400 is very similar. The 4m40 is a very dirty motor and as you have found oil reaches saturation very quickly after 500 k.

Nothing wrong with the delo 400 although I prefer rx super

[Betz]

Guys, this oil is the ducks nuts,

Just changed out after 12,000ks and the old stuff still looking viscous.

Absolutely no doubt to me that fleet spec oils such as the delo are the go for these engines.

Hope this helps some folks, don't believe the marketing crap, just give your ride fleet spec oil and you won't look back

[Poita]

I use Mobil Delvac MX and am very happy with it.

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