Landcruiser Diesel Oil

I would check out the Penrite site.....silverback

I use Penrite Diesel in my 94 troopy 1Hz and Penrite Diesel 15 in my turbo 100 series. The first is a mineral oil only and the second is a semi synthetic. The general wisdom seems to be use a quality oil and stick to the recommendations for grade. It is best to not use a semi or full synthetic oil in engines older than about 12 years as some of the seals were not designed for synthetic oil and they harden and leak.

Be careful using house brand oils as they tend to be based on price and are bought from whoever can supply the cheapest at the time.

Hi Tukka.
I brought a Hj 60 new in 1985. From new it used over a litre of oil every 5000 kls.
At 10000 klms Toyota advised me that although the oil type was correct I should change oil brands.
I changed to Castrol RX super and it immediately stopped using oil. I sold the car at 330000 Klms and it was still going fine and using no oil.
Hope this of interest.
Regards Cruiser.

Tukka,
Couple of points first up:
The SAE 20W-40 viscosity is quite an old concept now when lubricating modern diesel engines. Most formulations changed to SAE 15W-40 about 20 years ago when the availability of more shear stable viscosity index improvers became commercially viable.

These SAE 15W-40 oils are a better lubricant for your engine because they still match the SAE 40 requirement at operating temperature while being thinner at start up so they flow faster around the engine to provide better start up protection.

The API CD classification is long dead. Current classification is API CI -4 (there is a CI-4 plus but that's for heavy duty applications, mainly Mack truck ) and for diesel engine oils to meet this level they have a much ,much better level of component protection.

You would be better served by using an SAE 15W-40, API CI-4 oil.
As to brand, Castrol, Shell, Penrite, Caltex, Mobil BP, they all have suitable products. Castrol RX Super has been mentioned, this is a very good product, known in the industry as the million mile oil for big trucks. That is a million miles before first overhaul of the engine.
Your 1HZ has only just been run in at 300K, don't think of it as an older engine, we have one on the farm that's up to 1,628,000 Km and still going strong. Hasn't needed a rebuild, and is used all day every day.

Hey Tukka

I have just changed from Penrite HPR diesel to Mobil Delvac, I have used HPR diesel for 14 years and It work perfect, on all of my 1HZ engines.

Why the change you ask? I worked at Mobil Jabiru for 3 months and was able to obtain parts and oil at cost price as an employee.

HPR diesel was over $1500 per 208 lt drum and Delvac at cost was $1150, so as I change my oil and filters at 2 week intervals I have opted for the cheaper option, I have friends in the industry that swear by Mobil as well.

My option now is purely economical.

Cheers Steve.

castrol rx super every 5000klm (and filter) on my 1hz, 1998 75 series,295,000klm.

cheers, sparra

I use Penrite HPR Diesel 15 in my new 76 Cruiser v8 and have 14000ks on it now no dramas.

tukka,
I use Shell Super Diesel in my 1985 2H HJ75. (370,000k's) Was using Rimula x until i got onto the Shell site and they said that i should be using Shell Super Diesel or Shell Rimula D. Don't have to add oil between changes. (Approx every 5,000k's)
Cheers,
Bros.

Your 1Hz is fine with any diesel engine oil, - I go along with Bushtrek's well explained advice above.

I use Gulf Western Top Dog - its the right specs 15W40 Ci-4 and you won't be wasting your money on advertising hype. I used to get it for $72 for 20litres from Adelaide Truck and 4wd, but i'd expect its gone up lately.