Well I’ll be Fuch’edIt's only for the diesel.
The petrol engine uses oil from Fuchs.
Higher viscosity can lead to increased wear, fuel and oil consumption in a modern engine developed with tight tolerances.Increased viscosity = more fuel use, but less oil consumption, but obviously better in high temp.
Sir Jim is a chemical engineer so he might off had some input in to oil spec, it is his area of expertise.
I don’t think the ambient temperature matters to much it’s the engine temperature that counts. The manual states that all recommended viscosity grades of oil for the grenadier are suitable for high ambient temperatures. I suppose if the cooling system is working as should and keeping the engine at optimum running temperature then all is good.I think the issue with the factory oil is that it’s thin to aid with fuel economy. This however compromises its ability to lubricate under high pressures and temperatures. I’d say that for a hard working engine the 0w40 would be better. So long as it is a low SAPS oil.
What is the spec for Australia? SA? Middle East? Is it still 0w30 in the desert?
On top of that, let’s see how people interpret arduous usage or whichever term IA have used.Like in the other thread I won't mention the drain intervals
That was what I found as well, looking for the specification BMW LL-17FE. MOTUL, I mean.Bonjour à tous
La plaque indique
View attachment 7807481
Par exemple l'huile MOTUL 0W30 conforme aux spécifications BMW
View attachment 7807482
Have you checked whether what's recommended is actually available...In every car forum I visit (US V8, Porsche, BMW, etc.) the longest treats are about oil, additives and change intervals.
simply put in what is recommended by the manufacturer and comply with the periods, done!
Yeah, it’s insane to write circles around oils and intervals.Wow I can't believe this thread is already at 3 pages!
And yet , I predict it will reach well into double figures....