Which oil??

Hi Gerry, it is a little daunting I agree, but I think if you used a diesel engine oil as opposed to just "engine oil", you will have no problems. I feel that the higher compression ratio of diesel engines (needed to compress air/diesel spray to the point that it gets that hot that it ingnites) deserves some of the better oils on the market. We use Shell 15W40 Rimula Diesel oil in everything including petrol motors as it has a higher specification than oil for petrol motors.
Of course every oil company has it's own 15w40 but get it in a dedicated diesel engine oil. Rus.

this is from shell all the others have similar pages.

TOYOTA
Land Cruiser HZJ70, HZJ73, HZJ75, 1HZ Diesel (1989-1999)
CRANKCASE
Shell Helix Diesel Super
Capacity 9.3* Litres (See Note 3)
MANUAL TRANSMISSION
Shell Spirax A 80W-90
Capacity 4.9 Litres
AUTOMATIC TRANSMISSION
Shell ATF Dexron III
Capacity 6.0 Litres (See Note 17)
DIFFERENTIAL
Shell Spirax A 90 LS
Capacity 2.5 Litres (See Note 15, 35)
POWER STEERING
Shell ATF Dexron III or Shell Helix Power Steering
4WD DIFFERENTIAL
Shell Spirax A 90 LS
(See Note 35, 63)
4WD TRANSFER
Shell Spirax A 80W-90
Capacity 2.2, 2.1 Litres
NOTES
* Includes Oil Filter
3 May also use RIMULA D 15W-40 or RIMULA X 15W-40.
15 Rear differential.
17 May also use HELIX ATF DEXRON III.
35 May also use HELIX LSD 90.
63 With differential lock system, 2.6 litres; without, 2.3 litres.

© Copyright 2003, Datateck Publishing Pty Limited

the above info is sourced from this link in Shell

http://www.shell.com/home/au-en/html/iwgen/shell_for_businesses/lube_match/app_lubematch.html

As above here is caltex's link
caltex oils
I have an 80 series 1hz with denco turbo.
I use Gulf Western 15/40 Top Dog SL diesel oil. We use this in most cars and trucks as it is the top of the range.
I change oil every 5000 and oil and filter every 10 000. Has done 286 000 k now and compression is better than new, uses no oil.
I don't think it matters what brand you use so long as its a reputable brand and stick with 15/40.
Cheers
80s

I work for a large mining company and we run Shell Rimula X in all 4wd and earthmoving epuipment. It is easy to find at any shell for when you are servicing on holidays.

Allan

G-day Gerry, I too have an HZJ 105 but without turbo.

I used to change at 10,000 when the vehicle was doing reasonably long runs - (2 hours plus), but now most of our trips are 10 Min suburban travelling so am changing at 5,000

I wouldn't waste the money on synthetics as it's not worthwhile for indirect injection motors(they put too much cr#p into the oil).
Unless you're doing long easy runs I'd change at 5,000in the 1HZ, particularly if towing, 4 x 4ing, dust etc

I use Castrol CXJ (CF-4 15W40) which is supposedly designed for Jap vehicles.
(Apparently ring lands/spacing is different between American/European/Japanese with different oil properties required)

Good Luck

Peter