Turbo maintenance

Sorry meant to say checked at 150k and then at 50k intervals after that unless rebuilt.

To all the replies, Thank, my mechanical knowledge does not extend to Turbo's The vehicle has 230 thousand kilometres on the dial and does not do any towing, it only carries our slide on camper which all up would be 8oo kilos plus or minus 50 kilo depends on the amount of liquid of varying colours. I use Penrite 15-50 oil. Once again thank you..

Mike

Is the oil you are using keeping the internals "clean"? that is the important bit for everything inside which is lubricated.

Ross , when you mean clean, is that indicated by the fact that there are no particles etc in the discarded oil after changing or is there a more efficient measure to test the cleaness of the internals. Hope this doesn't appear to dopey.......

Mike

Mike and Lyn
You want all contaminant created inside the engine to be in the oil which you drain out of it. So it should contain those particles of carbon or anything else which is wise to remove.

If the engine oil is working for you it will carry away contaminants, ie, any build up of soot or gummy deposits.
If you look in the oil filler and see the valve gear it should be clean, maybe slightly discoloured but not black and dirty with a visible build up of rubbish on the surface of everything.
Probably at over 200,000km the oiil will discolour and become darker more quickly than when at 50,000km but even if it does, the oil should still be performing and cleaning the internals, so no build up remains deposited inside.

When changing oil, a good strong LED focussed torch can be used to inspect strainer gauze (if visible) to see any gumming on the strainer ie, Like some Hilux and Prado get. Any parts you see in there through the sump hole should be relatively clean and not scummy or heavily dirty.

Many oils don't do a real good job at cleaning. Only by looking and being discerning will you notice the build up.

Once again thanks Ross I now know what to look for. Do you have any comments about Penrite Oil, I have been using it for sometime now after it being recommended, seems to be OK,

Regards

Mike

Mike different oils have different values for different engines, the 4.2 six is classed as a dirty engine as such it allows blow by which contaminates the oil with soot and carbon. Different to some of the yank engines that are "cleaner" engines and the newer 4.5 diesels from Japan. One of the reasons the 4.5 came about is to "clean up" the engine.
So different oils have different properties such as detergents and high levels of other minerals to aid in the removal and suspension of these deposits.
Penrite is an american oil designed for american engines having said that it is still a high quality oil whether it meets you vehicles needs is your design. When i had the 4.2 in my vehicle i used Caltex Delo, with the yank v8 in it now i was surprised to see the installer using the same oil and recommending it's use.
http://www.racq.com.au/motoring/cars/car_advice/car_fact_sheets/understanding_engine_oil_designations

Sorry mate Penrite is a small Australian oil blender.

While they do make some oils that have a reputation for high quality........truth or perception, well that is another argument......their diesel spec oils however simply can not compete performance for performance, spec for spec and price for price with the diesel spec oils from the 4 major oil companies......very few oils can....this is a huge volume market and the big oil companies make damn sure their products in this market are very competitive...to such a point that there is very little to seperate them.

As for different oils for dfferent vehicles........the top 3 diesel spec oils..dello , rimular and devlac ( and rx super too).....are multi-fleet multi-spec oils..specifically designed to meet or exceed a long string of oil specs for a wide range of vehicles.

There is no point worrying about it being a clean or dirty engine....they are specifically designed to deal with whatever.

Select the oil bassed on what is speced..for most pre common rail jap engines ya best option is a JASO DH1 spec oil.

They have both good soot suspension properties as required by the dirty little oil burners and very long drain intervals as run by many of the cleaner diesels.

I run caltex dello 400 in my dirty little oil burner....it is the correct oil and the correct spec for the job...I also run it in my considerably cleaner running petrol motor...because it well and truly exceeds the spec required for that job too.

My brother has been running RX super in every 4 stroke engine he owns for over 20 years now....from his 4.2 liter nissan 6 right down to the rider mower...since he saw the light and switched from retail packaged oil.
THE biggest and most obvious difference that he found was the absence of sluge using the RX super,... that he had found problems with the fancy retail oils he used before.

cheers

I stand corrected on the Penrite. I think it may have been the original oils it was blended from that lead me down this path.

Penrite buy their base oils from the same places everybody else does....the major oil companies.

cheers

Originally sourced from Pennsylvania.

Bantam speaks the truth :-)
The oils mentioned are the ones used by large companies in mining trucking etc, and get used in CRD, old school TDI and indirect injection and petrol vehicles, and can be bought direct for around $100 for a 20 litre.

They are used in engines both large and small (we use BP Multifleet in our 69 litre CR 3516 Cats putting out 1500kw) because its as good as anything else on the market.

sorry correction required due to typing error.
RX super is a Castrol product.....Castrol like Valvoline is owned by BP.

In my opinion BP no longer produce the top quality product that they once did.

In the past BP produced some excelent oils under their own brand..they no longer seem to, relying on Castrol as their premium brand and Valvoline as their second string brand.

In their day all three brands where carried on some top spec, highly competitive products.....back in time, "Coarse Pluss" was the racing oil of chioce.....in its day RX super was a hell of an oil and arguably the market leader.

RX super remains Castrols flag ship diesel spec oil....it may earn some of the similar oil acreditations that the other 3 do...but it can not claim the stricter JASO DH1 spec like dello 400 does......it is still no slouch of an oil..ad truckies still buy it by the barrel.

BP seem to be content to be one step behind the leaders....save cost on their product and sell at top dollar bassed on the past reputation of their brands.

Some will disagree...But I call em as I see em.

cheers