Engine Oil

Submitted: Sunday, Jul 17, 2005 at 16:33
ThreadID: 24804 Views:4987 Replies:2 FollowUps:7
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Just bought a new 4x4, which is a 2003 hilux 3lt turbo and i don't know what oil to go i was thinking Castrol RX Super which is 15/40? wanna change oil every 5000km as well to increase the live of the motor anyway i can basically and the 4x4 has only done 34,000kms

Can people suggest anything what engine oil to use?
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Reply By: ToyMotor - Sunday, Jul 17, 2005 at 17:38

Sunday, Jul 17, 2005 at 17:38
You'd be better off with an oil which meets the JASO DH-1 spec, such as Delo 400, Caltex CX-J, Shell Rimula X or Synforce Cruiser Oil (in no particular order of preference)

RX Super is made for American engines rather than Japanese.

Cheers
AnswerID: 120792

Follow Up By: Member - Phil G (SA) - Tuesday, Jul 19, 2005 at 09:13

Tuesday, Jul 19, 2005 at 09:13
ToyMotor,

Just wondering whether you an expand on why you suggest going by the JASO specs, given that Toyota's recommendations are for oils conforming to the API system. Did Toyota get it wrong???

Cheers
Phil
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Follow Up By: ToyMotor - Tuesday, Jul 19, 2005 at 12:19

Tuesday, Jul 19, 2005 at 12:19
The engine design. Basically the american engine has a high top ring and a large piston crown to bore clearance.
European engine, low top ring and a small piston crown to bore clearance.
Japanese engine, low top ring and a small piston crown to bore clearance, plus high engine oil operating temp (by purposeful design).

These three internal designs require 3 different types of engine oil to
function correctly.

For an interesting read, see the this page:

http://www.a1.nl/phomepag/markerink/80bigend_oil-analysis-scam.htm

and have a look at the scanned (.jpg) Caltex article.

To cut a long story short, Japanese oils are a high detergent (therefore ash) formulation which contains a lot of Calcium. American engines prefer a low ash oil (as you can see by reading the back of the RX oil container).

Cheers
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FollowupID: 376156

Reply By: Member - Phil G (SA) - Sunday, Jul 17, 2005 at 17:41

Sunday, Jul 17, 2005 at 17:41
Nigel,

Toyotas recommendation is pretty non-specific and listed in the handbook.
Your motor (1KZ-TE) is OK with virtually any mineral oil thats 15W40, and CF, CF-4, CH-4, CI-4 etc.

Out of interest, Castrol's Lube Guide recommendation is for Magnatec, which is a 10W40 CF grade. They do not list RX super.

I use the F U C H S Ultralube which is a 15W40, CI-4; get it in 20litre drums for about $70+ from Adelaide Truck and 4wd Spares.

Cheers
Phil
AnswerID: 120793

Follow Up By: Nigel (WA) - Sunday, Jul 17, 2005 at 18:30

Sunday, Jul 17, 2005 at 18:30
try this phil

http://www.datateck.com.au/lube/castr_au/default.asp?Section=2&Make=106&Model=2516

see it lists all the oils i need for the car
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FollowupID: 375866

Follow Up By: itisi - Monday, Jul 18, 2005 at 00:46

Monday, Jul 18, 2005 at 00:46
Can't work out why they would also recommend a low-ash oil (GTX Diesel) when Japanese diesels are supposed to be hi-ash oil! They also include RX Super which clearly states "to suit latest US heavy duty diesels"!

Also noticed different oils for Prado, same 1KZ-TE engine. I doubt if the addition of an intercooler would make any difference to the oil requirements.

Just my tuppence worth
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FollowupID: 375919

Follow Up By: Member - Phil G (SA) - Monday, Jul 18, 2005 at 11:25

Monday, Jul 18, 2005 at 11:25
Sorry Nigel, I see they do have RX super listed as the third listing, with no photo.

I was working off memory for the same motor in the Prado, and also in the new truck where Magnatec and a Synthetic are their only recommendations. I bit wierd - might be worth a phone call to ask them.

IMO I don't think the fine print matters much with oils. Changing it at 5k intervals is important with small diesels to prevent oil thickening.

IMO, any 15W40 mineral oil, CF or greater will do.

Cheers
Phil
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FollowupID: 375966

Follow Up By: Nigel (WA) - Monday, Jul 18, 2005 at 22:03

Monday, Jul 18, 2005 at 22:03
Just to let you knwo i have gone penrite HPR15 this is the only oil that i know is really good on diesels as i have used this oil on previous 4wd.

Thanks all
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FollowupID: 376099

Follow Up By: Member - Phil G (SA) - Tuesday, Jul 19, 2005 at 09:08

Tuesday, Jul 19, 2005 at 09:08
Nigel,

I'm guessing you mean Penrite HPRdiesel15, rather than HPR15 which is an oil for petrol engines.

Cheers
Phil
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FollowupID: 376139

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