Opie Oils

Just bear in mind that Castrol don't do a 5w-40 or 10w-30 proper synthetic in the UK and don't say Magnatec as this is in fact a mineral oil.

So this may have a bearing on the 0w-30 SLX proper synthetic recommendation!

Cheers
Simon

chilled

Aha,

So why do they recommend Castrol at all then? I'm going to put chip fat in and see what happens then There's probably evidence somewhere to suggest that it would be ok.

So when I've finished this bottle I might go to 10w-30 then, avoiding Castrol.

And to think that one of the reasons I didn't get an RX-8 is because I couldn't be bothered to keep topping up the oil! D'oh.

Opie Oils

Actually the Dealers (BMW) haven't got a clue and that's half the problem.

Only specific BMW engines require 10w-60 and I have the BMW Bulletin that states this but it appears that Dealers can't read!

The best guide is still the handbook.

Cheers
Simon

GSi

Some dealers say that the 'recommendation' changed recently - when the S54 engine came out - and that the Mobil1 stuff is now the recommened choice for M engines, but they have just applied that across the board on all M engines - which span years and years of different technologies. There is no clear message from BMW anywhere..

Which is why I rang up and asked you guys

Opie Oils

I have the "clear" message from BMW UK bulletin issued 11/04 and it's not ambiguous at all it's just that Dealers don't seem to understand it.

Cheers
Simon

MB

Hello Si Doing the rounds I see...

Im using Motul in mine, think it was 5w 50 or similar. Coming from Scoobynet, the high temp stability is much more of an issue, where I imagine shear stenght is more relevant due to the high revving engine, and therefore greater frictional forces?

MB

GSi

Any chance of posting a copy of it here
http://www.z3mcoupe.com/forum2/index.php

I'm sure a number of other owners would be happy to know what's what.

Opie Oils

I don't have access there but you're welcome to C&P this and I'll register and pop in if you want to introduce me

BMW Longlife LL01 oils are approved for all BMW engines except:

M43/CNG
S54
S62/E39 (up to 02/2000)

BMW LL01 oils are the following viscosities:

0w-30
0w-40
5w-30
5w-40

Only.

Issue status (10/2004) Date 1.11.04.

I also have the full list of approved oils at this date (LL01 is soon to be replaced with LL04 and we have a new product by Fuchs coming on stream this summer called Titan GT1 5w-30 LL04)

I also have the following BMW (GB) Technical bulletin issued 3/11/04

Quote:

Incorrect guidance is offered in relation to the correct operating fluids approved foe BMW vehicles.

Procedure

Please ensure that the operating fluids manual on TIS is consulted regularly as it contains accurate and up to date information on specified operating fluids.

An example of this is the Approved oil for the S62/E39.

The S62/E39 up to 02/2000 are specified SAE 10w-60 engine oils.

The S62/E39 02/2000 onwards is specified Longlife 01 fully synthetic

A check of section 3.0, 5.0 and 9.0 of the operating fluids manual confirms this.

Unquote:

Hope this helps

Cheers
Simon

MB

Ignoring me?!

MB

Lusaka_MG

Another user of 5W-40 here

I use Havoline's Synthetic (