Engine Oil

Hi Mally,
I wouldn't know which oil was the better, but consider this:
If changing the oil type causes the oil pressure to rise, it indicates that the new oil is more viscous (thicker if you like) so the resistance to flow through the engine is higher, so the pressure rises. It also means that less volume of oil is passing through the engine. So take take your pick. Its simple physics.
With respect, I would consider that it would be best to use the oil that the engine manufacturer has specified rather than accept the wisdom of a couple of fellows "at the pub".

Mally
Friend of mine used to run 20w/60 when he lived in the Kimberley, and in his opinion a good move.
Then moved back to Perth and during winter months found difficulty starting on cold mornings, so reverted back to 15/40 to resolve the issue overnight.
Toyota reccommend 15w/40 in their engines and I still use it in mine, but I use the Total Rubia TIR 7400 15w/40.
Product available in Perth at under half the price of the "big" name oils, and I have been using it now for over 10 years in 2 x vehicles with great results.
Cheers
Paul

Maily,
your engine should be in good condition so there is no need to use anything like a 20w60.

One of the best oils around for your style of engine is delo 400 15w40 mineral oil. It has been used in a lot of trucks and farm machinery and is a proven performer in a diesel engine.

I read a test somewhere and it came in as highly recommended diesel blue 15w40 as a top engine oil.

Ah! found it. Oil test

Remember some of these oils are not available in Australia.

G'day Mally
The old engine oil debate eh.
Fact 1.
On another 4wd site MANY, MANY, MANY, hilux owners use PENRITE and have oil problems,blowby past rings, with gumming, oil burning and failed turbo's etc.

The number of people who are having problems with that oil is incredible. You can read it for yourself.
Fact 2.
Those who have changed from PENRITE and used a good world recognized brand often had the symptoms disappear or largely reduce with regard to oil burning rates and premature oil contamination.

Besides the quality you require the viscosity is also important.
Unless your engine is stuffed it will never ever in it's life require a 60W oil. Your engine is a precision machined engine unlike a Harley Davidson.
If you put diff oil in your engine it will also instantly raise the oil pressure too, while not suited to engines the diff oil,it like the 60W, will cause more fluid drag, is harder to pump, doesn't get to the turbo quickly and causes more fuel use just to throw it around in the engine.

Do you value your turbo? Do you really? Then don't put thick oil in it.

An old SAfrican? What about an old Australian?
You want to talk to someone who has some knowledge of what modern engines require and it isn't 60W oil for sure.

Castrol Magnatec isn't usually recommended for a diesel. Although it has it's use mentioned for for petrol engines and diesels it isn't recognized as a diesel engine oil at all.
The specs for a diesel engine oil are usually different to petrol engine and I would use something which is squarely aimed and formulated for a diesel instead of a dual purpose, "one size fits all oil". You may find Castrol will sludge your engine. It is know to do this.

I agree with Allan, why listen to two people you don't know and have no idea of what they understand about oil. Then again don't listen to me either, I might be leading you up the garden path too.

Use what trucking companies use. Mobil Delvac MX or better, possibly the synthetic Mobil for diesels OR Caltex Dello 400.
Both of these oils are world wide proven to perform oils and give excellent results unlike the crap Penrite and the lesser than world class Castrol.
I wouldn't put Penrite in my motor mower because I like my motor mower.

When you listen to others I call it being MATED. me mate said type stuff.
That sort of hearsay has ruined more engines than you have had hot dinners. Mates generally do not know. Some do but who are they.

Yours Sncerely, in the long life of your engine.
Ross M

i heard the same about castrol..
not the best oil going around.
their was a realy in depth write up on lcool once.
it was a pretty full on read.

lots to digest.
loove the 1HD FTE, toyota should have went out of their way to keep that engine within emissions.. and in the current crop of vehicles.
with the option of the v8. and its issues.

This is going to be a very long tread.....

Use any good quality oil designed for the engine and application and be done with it.

Engine oil pressure plays a small part in protection...... oil shear and oxidation stability are two major qualities oils must have.

I'm sure your going to get heaps of responses from the chemical engineers and those who have do countless years and many miles of data collection...... not for getting the oil analysing and metallurgy they have done.

Lol, makes you wonder how Castrol stays in business.

If you use the correct specification oil for your engine and operating conditions from any of the major manufacturers sludge is unlikely to be a major problem, although reports suggest a few engines from some car manufacturers seem to have more problems than would be expected. Research, rather than internet chatter, suggests sludge results from use of incorrect spec oils, exceeding change intervals, short run or irregular stop/start operation, additives, extreme temperatures etc. Truck operating environments might be totally different to your normal driving situation so simply following their lead is not necessarily optimal either.

As Olcoolone says, look at your manual and pick any one of the major brands. If you have very deep pockets consider synthetic.

I love oil threads. they come up with so much information!

One safe way to determine which oil to place in the engine is to go to that much maligned and rarely looked at document that sits in the glovebox;"THE OWNERS HANDBOOK"
They have all sorts of information in there like which viscosity oil and usually the specification of the the oil eg ACEA 3 to use in various temperatures.

Any major manufacturer's oil that conforms to the specification and grade in the "OWNERS HANDBOOK" will be the best compromise for the particular car and operating conditions.
After all the people who actually made the car and engine wrote the book.

I would guess that they would be in a better position to advise on oil than a random person met in the desert.
Regards Philip A

i would love to know what facts are being used to rubbish both penrite and castrol oils as i have been using both brands of oil in both my prado,troopy and the classic cars that i have and have not had any problems with either brand.i have also not had any problems with any other brand of oil either both at work or at home, i have never heard such rubbish before about oils, if the owners manual states that you need a particular grade of oil stick to that i think you will find that most manufacturers oils will meet the same standard/api/sci ratings and that problems that some owners have had using different brands of oils are only thier opinion as to whether that brand was any good no a true unbiased evaluation of the oils based on sound scientific reasearch or testing.all oils can cause engine/turbo damage if the incorrect grade/type is used and if the oil is not drained, filter replaced or even if the engine is over filled with oil,was the engine thrashed from a cold start,was the vehicle only used on short trips,was the oil level checked on a regular basis,no one ever says if any of this happened during thier use of these oils, i think to rubbish a brand just because in your opinion it is no good is not a way to provide any sort of infomation to a person who has asked a valid question.

I used 20/60 penrite in my 1hz and the increased pressure blew my rear main