Thread: Land Rover Defender and oils

Thanks for sharing that information! Good on ya!

Here's some more information about the Castrol oil. It's called Softec TXT and it is not available off the shelves at KMart or Autobarn or Repco or Bursons. In fact it's rather hard to obtain.

You need to ring up Castrol and order it directly or via their truck (yep, those big long haul semis) oil suppliers.

Softec TXT come in 20 litre containers and if you order two, delivery is free! :-) How do I know all this? Well, I had to get some oil for myself so I ordered 40 litres directly from Castrol. I found their pricing cheaper than their distributors. Go figure...

lots of discussion,,
some swearing,,
some agreement,,


but thats what this place is for--

G'day,

Anyone here using the following on a TD5 engine and if so how do you find it:

Mobil 0W/40 Engine
Castrol Syntrax - Transfer Case
Castrol Syntrans - Gearbox

I bought a S/H 93 Disco 3.9i auto last Dec and have had ALL the oil, greases, lubes etc changed to Elf [French Elf Aquitaine] Fully Synthetics for ALL and have found them great so far...Engine Oil = 10W-40, others are as recommended by Elf for diffs/TX case/swivel spheres/automatic etc.....their products exceed LR's specifications and are LR approved.....just not well known in Oz.....and are cheaper than Mobil 1 and Mobil's Synthetic products.

Originally Posted by jake

G'day,

Anyone here using the following on a TD5 engine and if so how do you find it:

Mobil 0W/40 Engine
Castrol Syntrax - Transfer Case
Castrol Syntrans - Gearbox

Mobil - Waste of $$$$ but good oil, 0w is too thin and unnecessary
Syntrax - No worries there, can be hard to get... Not really necessary


Best seen (and I now recommend) is the Penrite range....

HPR Light Diesel 5 (Semi Synth) engine (TD5)
HPR Diesel 15 (TDi)

SynGear 75/90 in Diff and TC

Excellent stuff, works extremely well (quietest I have heard TC/Gbox) and reasonably priced in the market...

Cheers
Mike

<snip>0w is too thin and unnecessary

too thin when Mike ??

this is my reply on Outerlimits six weeks ago when someone claimed that a 5W-40 was too thin for a diesel

5w-40 is NOT thinner than an equivalent 15W-40 at operating temp, in fact there may be f%ck all difference at 0*C, and some 5W-40's are thicker than some 15W-40's at 0*C.
An SAE viscosity is a range, actual viscosity is measured in centistokes (cSt) eg an xW-40 must fall between 12.5 cSt and 16.3 cSt @ 100*C (most apear to fall @ 14-15cSt)
A 0W-xx or 5W-xx is able to pump/flow at much lower temps than a 15W-xx. Pumping viscosity at low temps is measured in centiPascals (cP) and a 0W-xx cannot exceed 3250 cP @ -30*C , a 5W-xx must not exceed 3500 cP at -25*C, and a 15W-xx cannot exceed 3500 cP @ -15*C.

Here's some specs for a few different oils at various temps

Mobil Delvac 1 5W-40. 14.8 cSt @ 100*C. pour point -45*C
Castrol RX Super 15W-40. 14.5 cSt @ 100*C pour point -27*C
Redline 15W-40. 15.1 cSt @ 100*C. pour point -45*C
Penrite HPR5 5W-40. 15.1 cSt @ 100*C. (no pour point given)
Shell Rimula Ultra 10W-40. 14.6 cSt @ 100*C. pour point -30*C
Castrol Magnatec 10W-40. 14.6 cSt @ 100*C. pour point <-35*C

yet at 0*C we get

D 1= 1066 cSt
RX = 1358 cSt
RL = 1122 cSt
HPR= 1350 cSt
RU = 0809 cSt
Mag = 1182 cSt

a 10W-40 (Shell Rimula Ultra) is actually thinner than both 5W's, and a 15W (Redline) is thinner than the 10W Magnatec and the Penrite HPRD5 at 0* !

It's only when you get down to North American type winter temps that the 5W-40's really show an advantage in pumpability.

HPR5 has a cranking pressure (cp) @ -30*C of 5719, yet
Magnetec has a cp of 7000 @ a warmer -25*C.
The only other directly comparable number was for the older CH-4 version of Delvac 1 which had a cp of 3250 @ -25*, and 20,000 @ -35*.

Any recommendations for a 4BD1T LT95/LT230?...

Originally Posted by 1103.9TD

Any recommendations for a 4BD1T LT95/LT230?...

LT230 same as listed above.

LT95 is basically the same as the R380 - the thin GL4 oils like MTF/VMX and redline. They lubricate much better than Engine oil - the original spec.

For the 4BD1T:
Castrol: J-MAX, Tection Plus, RX Super, GTX Diesel
Mobil: MOBIL SUPER DIESEL 15W-40 or MOBIL DELVAC MX 15W-40 or MOBIL SUPER XHP 15W-40