What type of engine oil

[Toolman]

Forget about the 2c
RX Super, I have used it for many years in lots of different machines in a contracting business, with better than average engine life!

[alleng]

The last oil I used was given to me by a Cat mechanic in Mackay. Everytime he did an oil change he had some left over and gave me a 20lt drum of it. Its the best damn oil I have used. Rarely do I put oil in the ole girl. Wish I could remember what it was though.

[Newcastle George]

I used to use Penrite 15w40 Mineral in our Nissan/UD FE6T but found it a little rattly on startup, changed to Valvoline 15W40 Mineral and found it much quieter however this last change I went for Nulon Semi Synthetic 15W40 but haven't driven it since.

George

[jon_d]

I've started using Phillips Guardol ECT oil.

https://phillips66lubricants.com/

Very noticeably more quite than Pentrites and others.

Try and get the CK4 and not the CT4. I'm using CT4, but CK4 is the next generation again. I've seen CT4 for $95/19litres. I paid $120 ish - grrr

https://phillips66lubricants.com/produc ... engine-oil

[native pepper]

There are only 2 types of oil tested and certified for heavy duty diesels in Aus, great western and castrol, none of the others have passed the tests. Our bus runs a 6bd1T and always use great western 10-40 oil which is suitable for warm and cold conditions. The engine in the bus had done over 700000klms, uses no oil, no smoke and no worries and Is the same oil I use in all my diesel engines, high and low revers. All I've done to it in that time, is put a new turbo on and do the injectors once and it runs on veggie oil,

[bagmaker]

There are only 2 types of oil tested and certified for heavy duty diesels in Aus, great western and castrol, none of the others have passed the tests. Our bus runs a 6bd1T and always use great western 10-40 oil which is suitable for warm and cold conditions. The engine in the bus had done over 700000klms, uses no oil, no smoke and no worries and Is the same oil I use in all my diesel engines, high and low revers. All I've done to it in that time, is put a new turbo on and do the injectors once and it runs on veggie oil,

Certified/tested for who NP?

[BruceS]

I think we can just take it as a comment and move on?
I'm sure every major oil company has a certified for use oil for "heavy diesels".
By that I'm assuming you mean Mack, Volvo, Cummins etc etc?

[native pepper]

There are only 2 types of oil tested and certified for heavy duty diesels in Aus, great western and castrol, none of the others have passed the tests. Our bus runs a 6bd1T and always use great western 10-40 oil which is suitable for warm and cold conditions. The engine in the bus had done over 700000klms, uses no oil, no smoke and no worries and Is the same oil I use in all my diesel engines, high and low revers. All I've done to it in that time, is put a new turbo on and do the injectors once and it runs on veggie oil,

Certified/tested for who NP?

Was surprised when I heard this from a service station owner get my gas and hydraulic oil from, checked with the bloke I get my engine oil from who is a wholesaler of a number of brands and he told me it's true. They are the only two that have been tested for Aus conditions in heavy vehicles and that's all I know, other than they both are the only ones in the PC11 and API CJ-4 categories, the pc11 came in last year, API CJ-4 in 2006 I think and pc11 is supposed to represent carbon neutral oils. No idea what they do for other vehicles and it's gulf western, not great western, my mistake. Most truckies and machine operators use gulf western that I know, that's not to say other oils aren't good for the job, but have never had any problems over the years using it and it is much cheaper than the name brands and only comes in bulk 20lt and 200lt.

It interests me as we do a huge amount of travel and the type of oil makes a huge difference to the engine performance and life, plus have so many diesel powered things and use veggie oil for fuel, so make sure we use the best there is and to my mind, gulf western takes the cake for price and as good or eve better than castrol, which was what I used previously to gulf.

if you're just cruising and don't do huge amounts of klms, don't think it would make a difference what you used, but not some of the cheap recycled oils they sell and may well rip the guts out of your engine over time.

[jon_d]

I think you'll find there is a whole swag of brands that meet API CJ-4

Just put " API CJ-4" in your search engine.

And I think PC11 has become the new API CK-4

[alleng]

And the winner is.....drum roll please
GULF WESTERN
Thanks for all the feedback guys