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John-M3 
Senior Member II
Joined: 01-July-2005
Location: Munich Germany
Status: Offline
Points: 175
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 Posted: 19-February-2006 at 11:14 |
There is nothing wrong with using TWS, that is not a "miss-fill".
It is the superior oil. All the M5 owners at the Ring are running it
as well as people who run M5 engine in race cars.
I dont know what is so difficult to understand, there are no
engineering reasons that speak against TWS.
John
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oilman
Bavarian-Board Forum Sponsor
Joined: 28-June-2004
Location: United Kingdom
Status: Offline
Points: 1053
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Posted: 19-February-2006 at 11:20 |
It is not the correct oil according to the BMW TIS.
Cheers
Simon
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John-M3
Senior Member II
Joined: 01-July-2005
Location: Munich Germany
Status: Offline
Points: 175
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Posted: 19-February-2006 at 11:24 |
yes it is. call BMW motorsport and ask.
John
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John-M3
Senior Member II
Joined: 01-July-2005
Location: Munich Germany
Status: Offline
Points: 175
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Posted: 19-February-2006 at 11:25 |
also use your head a little. look at the oil specs.
there is also nothing special about an s62 engine compared
to say and S54 engine to require a low weight oil.
John
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harvard468
Groupie
Joined: 05-August-2004
Location: United Kingdom
Status: Offline
Points: 95
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Posted: 19-February-2006 at 11:31 |
John,
I am not taking any technical issue at all with you as you clearly know much more than I do. I only make the point that BMW's own technical bulletins are clear that they recommend TWS only up to Feb 2000 S62 engine builds and then LL-01 0/5w-30/40 thereafter. Owners' manuals are equally clear. The issue is that many service departments don't read the technical bulletins and therefore fill with oil that is not the recommended one for that car especially when the service indicators don't tell you an oil change is due for about 15,000 miles!!
I acknowledge that this is for the mass market consumer, and presumably also for warranty reasons. The knowledgeable enthusiast will always have the ability to use what he feels and knows from experience is the most appropriate oil for his car for his purpose - as do you. I am all for this.
STEPHEN B
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Stephen B
1990 Z1
1994 E34 540i Touring
1999 E38 740i (Had to go)
2001 E39 M5
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eljockvis
Newbie
Joined: 10-January-2005
Location: northants
Status: Offline
Points: 34
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Posted: 19-February-2006 at 11:32 |
im no expert on this subject but when i told bmw gb that my 2003
s62 engine had 10w60 in it they told my dealer to change the oil free of charge to 0w30/40 and they did!,so there must be some kind of issue no?
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oilman
Bavarian-Board Forum Sponsor
Joined: 28-June-2004
Location: United Kingdom
Status: Offline
Points: 1053
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Posted: 19-February-2006 at 12:20 |
The issue is the viscosity that the design requires in stock road cars.
At 100degC oil temps they are as follows:
SAE 30 = 11cst
SAE 40 = 14cst
SAE 60 = 24cst
If the car requires sae 30 or 40 and an sae 60 is used there are several consequences that can occurr.
Poorer fuel consumption.
More viscous drag and therefore lower bhp.
More friction, heat and wear.
The risk of air entrainment if oil temps are too low, causing slugs of air to be fed to bearings.
An sae 60 would need to run an oil temperature of around 140degC to be the same viscosity as an sae 30 at 100degC and around 128degC to be the same viscosity as an sae 40 at 100degC.
At an oil temperature of 90degC the oils would be these viscosities
SAE 60 = 30cst
SAE 40 = 16cst
SAE 30 = 12cst
It's your car, use what you like but unless sae 60 is specified or there is a good technical reason (high oil temperatures being the logical one) I would not use it personally.
Cheers
Simon
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email: sales@opieoils.co.uk
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John-M3
Senior Member II
Joined: 01-July-2005
Location: Munich Germany
Status: Offline
Points: 175
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Posted: 19-February-2006 at 12:56 |
There is no issue. there are people who theorize a lot though :)
if you asked what BMW motorsport would use in a racing situation
youll get a different answer. Im only telling you what the guys in germany use. you dont have to follow that advice and it does not matter to me. BTW, I build 30K engines, so I do know a bit about this.
John
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John-M3
Senior Member II
Joined: 01-July-2005
Location: Munich Germany
Status: Offline
Points: 175
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Posted: 19-February-2006 at 12:58 |
PS: a TWS 10w60 is a 10W base oil. it only acts like a 60 W
oil at 100C. go buy a 1L and see how thin it is yourself.
John
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eljockvis
Newbie
Joined: 10-January-2005
Location: northants
Status: Offline
Points: 34
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Posted: 13-March-2006 at 17:53 |
hey chaps
i have 8 liters of castrol rs 0w 40 synth in my shed
is this ok for an 03 s62 v8?
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oilman
Bavarian-Board Forum Sponsor
Joined: 28-June-2004
Location: United Kingdom
Status: Offline
Points: 1053
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Posted: 14-March-2006 at 04:26 |
Absolutely,
Its LL01 approved.
Cheers
Simon.
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WHICH OIL FOR E39 M5??