Thread: TD5 synth or semi synth oil?

Hi Rick,
Interesting... thank you. I work for one of the suppliers of the base stock oil, what's more possibly to I suspect the boutique business you mention in the US, well at least used to before that part of the business was sold off to someone else. I have an affinity for Castrol oils, I also may have some bias in this direction. Personally don't have any issues with the mineral or synthetic options here, when I have removed parts of the engine I don't really want to I have never found any to be really concerned about.

Thanks for the info


Cheers Marty

Originally Posted by DANNY2503

I currently use Penrite Hpr5 Diesel in my customers cars on their TD5's, but in my own I am testing a mineral oil called ULX110. If you google it their is some great info which puts this oil way above most.
I will have the oil tested at 10,000 Klms and report back on what the tests say. I did a complete flush with a cheaper mineral oil as well as new filters inc dropping the sump (needed a gasket anyway) to remove any excess oil that can't be removed with a normal change.
The oil is out of SA and on initial change I must adnit it was certainly smoother as well as felt a slight increase in power. They also do mention lower noise levels but I do not hear that.

Is this the stuff your talking about? It looks interesting

5w30 (VW 504/507) ULX110 Motor Oil – Engine Oil, Gear Oil, Performance Motor Oil

Originally Posted by Kandy

Oh yea, the old oil debate
Specs for Td5 is 5-40 .
Most wear is done on start up, engineers know what oil is needed to protect that so hence the specs.
Keep to it.
No brainer , full syn. is a superior oil hence the price.
Mechanics opinions are varied, mine said avoid brand changes, stick to specs, yeh ok.
Another " change every 5K " , old view with mineral oil.
I use Nulon full syn. 5-40 as I chose this ages ago and just stuck to it, never comes up on bloody "specials" , at 10k, both filters, oil always looks like Im wasting my money could go longer but so what.
Full synth on all other oils.
GTX Castrol /?went in my HR ute.

I was talking to someone about this the other day. We both concluded that oil is far cheaper than an engine rebuild.

This subject really sounds like a 'ford vs holden' argument!

Originally Posted by John_D2

This subject really sounds like a 'ford vs holden' argument!

Which is fine, IF you take emotional allegiance out of the discussion!

There are reasons for and against that can be debated, then when the for reaches a point where it outweighs the against there is a clear winner.

Oils are much the same: when the protective properties of an oil versus another blend are analysed for each application and winner will prevail.

I've always used Penrite Semi synthetic in my Td5 since i bought it 3 years ago.

I used to use 5W40 but now i use 15W50. I would prefer to use a 10W50 but they don't make it in the diesel oil.

Only reason i use such a 'thick' oil in a Td5 is because of very low oil pressures with the 5W40 when hot.

Penrite - good stuff.

I’ve got to agree with the majority and say Penrith semi 5w - 40. Good and recommended to me from 2 different sources.

but in saying that I’m new to the land of disco 2 ownership and have just recently bought my first torque wrench!

Joe aka monsters8

Originally Posted by monsters8

I’ve got to agree with the majority and say Penrith semi 5w - 40.

Joe aka monsters8

Hey!
I was born in Penrith, but I'm a little older than 40 now.....