300tdi oil

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Originally Posted by Dougal

Wouldn't a better approach be to sample the oil and find out what's actually happening?

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which is how I can push a Nissan TD42T out past 20,000km OCI's easily with less wear using Delvac 1 than a decent mineral oil changing at 5,000km ;)

Frank, you're preaching to the converted re synthetics, and I've lost count the number of filters I've cut open. ;)
I know operators using Delvac 1 in DD60 series engines averaging 96,000km fleet oil changes vs 30,000km maximum using RX Super, (Mann-Hummel centrifuges as by-pass filters and used oil analysis) but if people insist on 5-10,000km oil change intervals, a good mineral oil protects just as well as it's predominately additive package these days rather than base oils that do the protecting.
Mostly, it's only over the long haul the synthetics really show an advantage.

I will just add my 2 cents.I have run Penrite in my motor for 400k and it doesn't leak it,burn it or rattle so I am happy.I change it every 10k with filter and in my opionion all the oil you get is good as all of the big companys use it,it comes down to choice.I do think changing oil in a LR every 5k is a waste of good oil.Jap engines are sooty,Hilux's are notorious for it,on my engine you can still see the head under the filler cap is clean with no build up of muck.I use the same HPR 15 Diesel oil in the V8 Disco aswell,it is nice and clean around the rocker gear to. Pat

I have been using "Shell helix" diesel and it seems to be ok