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(Post Link) post #1 of 8 Old 08-06-13 Thread Starter
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best diesel motor oil ?!

Hi All,

I was searching online for a good motor oil for my GT and I came across this;

TDR57_Oil.pdf

I am not sure if you guys have had a look at it but here it is.

All the best
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Typical of the Yanks to give themselves a big pat on the back!...not much of that stuff can be had over here easily!

So, the answer is?

Personally i would go for Shell Ultra (yes American) but readily available over here>
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Hi fildigger,
I have always used castrol but if there is anything better out there way not.
So what do you use in your car? and diesel or petrol?
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I use MILLERS for my race car/petrol so when I bought the 159 2.4 I contacted their tech guy for advice on their best oil for the Alfa tractor ----- he said well if it's towing your minno race trailer at times and you drive hard , use the same oil as in your race car --- which is 5w40 Millers nandrive . I'll have it out in 8000 miles not the 18000 recomended.
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AGIP used to have very good oil for diesels...100% synthetic...5w40...they no longer make it as far as the local dealer told me.
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Quote:
Originally Posted by fildigger View Post
Personally i would go for Shell Ultra (yes American) but readily available over here>
Uhm Shell is Dutch... Their oils are generally of good quality - the HX7 is a bit better rated for Winter than the HX5 (10W40 vs 15W40) The Ultra (5W40) is for bitter cold all the way to warm conditions.

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Originally Posted by 1922 View Post
Hi fildigger,
I have always used castrol but if there is anything better out there way not.
Magnetec (10W40) is not a great oil it breaks down too quickly - their Edge products are good (5W40 / 10W60)

Diesel motors are less finicky IRT oils than the Multi-Air motors, more room to play in. Diesel type oils have more cleaning agents in for soot than their normal counterparts... Using a normal mineral oil, I agree to half your interval with high load conditions - Fully synthetic (Ultra / Edge) can handle it - it doesn't break down much - just check the sludgy-ness of the oil if it does not get too dirty.
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What happens if you put the wrong oil in by mistake??

Need to check but I think my mechanic put 5w30 in 2.4
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The 5W is the winter spec (cold start) - the lower the value - the more true its viscosity is at increasing lower temps. The 30 / 40 / 50 Is the oil's viscosity at 100C.

The 5W30 is a slightly less viscous oil (read thinner) oil than a 40 grade oil. As long as oil flush was not used with the service (which will make the new oil even thinner) it will not have immediate issues. In bitter cold areas it is better to use a thinner oil and very hot places a more viscous oil is better.

Engines and turbo's with tight tolerances need a thinner oil, where older / looser engines just splash such oil around with ineffective lubrication. So compared to the 1750TBi / 1.4MA engine - the 2.4 can use a more viscous oil.
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