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Old 03-27-2013, 02:28 PM   #1
tagesk OP
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Mother of all oil-threads

Ladies and Gentlemen,
In the old days, we would run 10w-40 SF in winter and 20-50 SF in summer.
Done deal.

With the camhead, and now the wethead, things aren't that simple any longer.
I have had a proud owner of a wethead quote from his Owners Manual. No longer does it say "Oil requirements", but the term is "suggested".
If you have any fantasy at all, you can imagine how many oil-threads will arise from this.

Thus, we, here in the Mother of all Oil Threads, need to figure out what the Official GSpot FAQ Recommandation should be.

Now, I am not very interested in what you personally think is the best oil. Or if Redline worked well in you '74 Commando, but rather what BMW requires for the '10 camhead and the new wethead.

I know that the Owners Manual for the wethead says "Suggested oil: 5w-40 SL", but what does that mean? What does the engine require?

Now, if you have access to a wethead manual you will notice that a particular producer is "suggested". If you know anything at all about oil, you will carefully refrain from dragging the producer into this. We want to advice our fellow travelers on the requirements, not some local producer.

So, please enlighten me, and I will keep the GSpot FAQ abreast on the news.

Thank you!

[TaSK]
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Old 03-27-2013, 04:11 PM   #2
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This will all end in tears.
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Old 03-27-2013, 04:13 PM   #3
tagesk OP
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Quote:
Originally Posted by Tmaximusv View Post
This will all end in tears.
A drop of oil can't hurt.



[TaSK]
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Old 03-27-2013, 04:43 PM   #4
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Originally Posted by Tmaximusv View Post
This will all end in tears.
Yeah this can't end well.

I'll see you again on page 32.
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Old 03-27-2013, 04:51 PM   #5
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Seems to me that even BMW is saying it really doesn't matter. Case closed.







My bet is this will be the last post
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Old 03-28-2013, 10:50 AM   #6
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Quote:
Originally Posted by DGraham View Post
Seems to me that even BMW is saying it really doesn't matter. Case closed.

I'd want to see the wethead manual in German to make sure it wasn't a translation error.




(this one should add about 30 posts to the thread)
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Old 03-27-2013, 04:54 PM   #7
orgo
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Same oil you've been using. 10W-40 SF ACEA A2
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Old 03-27-2013, 05:52 PM   #8
Andylaser
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Quote:
Originally Posted by tagesk View Post
I know that the Owners Manual for the wethead says "Suggested oil: 5w-40 SL", but what does that mean?

[TaSK]


No it didnt.

It suggested "Castrol Power 1 Racing SAE 5W-40, API SL / JASO MA2"
I take this to mean they would like you to use "Castrol" brand oil, but other brands with similar properties will be acceptable.


Quote:
Originally Posted by tagesk View Post
but what does that mean? [TaSK]

It means the engine requires SAE 5W-40.

It really isnt rocket science.
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Old 03-27-2013, 06:18 PM   #9
BTL
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For those that have access to this Mag....this months BMW MOA has super technical article on oil, with more graphs and technical info than any oil thread needs.

I left the magazine in the bathroom......think I'll just read the owners manual from now on.
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Old 03-27-2013, 08:27 PM   #10
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If I had one of those wetheads, I would use 5-40 HDEO...cheap and available and used in diesel engines 'round the world. As for brands, Shell Rotella, Mobil Delvac or Chevron DELO here in the colonies.
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Old 03-27-2013, 08:45 PM   #11
Mike Ryder
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Task, Sir.
That was a remarkable re-branding of the oft cursed thread. I'm uncertain
if you are sincere or have a slightly twisted vision of humour.
Please advise.
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Old 03-28-2013, 01:17 AM   #12
tagesk OP
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Quote:
Originally Posted by Mike Ryder View Post
Task, Sir.
That was a remarkable re-branding of the oft cursed thread. I'm uncertain
if you are sincere or have a slightly twisted vision of humour.
Please advise.
Shakespeare to the rescue:
Quote:
Originally Posted by Hamlet
Beware
Of entrance to a quarrel, but being in
Bear't that the opposed may beware of thee.
It is not clear from the manual (on the wethead) if BMW mere suggests a producer or if they also suggest a viscosity and quality.
Nice if I mis-read (not native Over There, you know) and, as mentioned above, 5w-40 is the requirement.

For the GSpot FAQ, a single requirement is nice. But the question of 10w-40 will arise shortly, and I am trying to have it settled before we need the answer.
Please notice that 10w-40 has already been suggested by one poster above!

I'll write 5w-40 API SL in the FAQ for now. Please keep your eyes open for alternative sources of information. The "Repair CD", for example.

[TaSK]
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Old 03-28-2013, 06:05 AM   #13
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Quote:
Originally Posted by def View Post
If I had one of those wetheads, I would use 5-40 HDEO...cheap and available and used in diesel engines 'round the world. As for brands, Shell Rotella, Mobil Delvac or Chevron DELO here in the colonies.
5w - 40w motorcycle oil - simple
10w - 30w motorcycle oil
20w - 50w motorcycle oil if it is hot out sure

Wethead is a wet clutch bike so it would not be advisable to use a basic "car/truck" dry clutch based oil as it has added friction modifiers that will encourage a wet clutch to slip.

With the wethead - gone are the days of cheap car or diesel oil.

Anything in the range of 5w to 40w is fine with the same specs - depending on climate and usage. The larger the gap between the numbers the harder the oil has to work....

Any number of major brands will work well and fit the manuals suggestion.
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Old 03-28-2013, 06:29 AM   #14
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A little birdie told me mobil1 0w-40 is the holy grail....
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Old 03-29-2013, 08:05 AM   #15
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Quote:
Originally Posted by def View Post
If I had one of those wetheads, I would use 5-40 HDEO...cheap and available and used in diesel engines 'round the world. As for brands, Shell Rotella, Mobil Delvac or Chevron DELO here in the colonies.
+1, run the break in oil in it for 600 miles or whatever they recommend, let the dealer do the first oil change with their suggested/recommended brand, then at 6000 mi or next recommended service, Rotella T 15/40.

If it is cold let it idle for a minute to get the golden juices flowing and then
the wheels off it and at the end of the day with a on your face.
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