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  #1  
Old 09-25-2023, 03:33 AM
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BMW LongLife01 LL04 etc...important?

Can someone please shed light on the importance of this classification?

Lets just say some fully synthetics 5/40w I am seeing do not have the bmwll01 or bmwll04 on the tin so to speak, but they do have compliance with ACEA3/B4 etc as well as compliance with various porscche, MB, volvo, renault etc

What is the importance of the bm longlife? (Ok there is the extended drain interval they mention) but can i get away with the fully sythetic 5.40w?

Got a 2004 car....100,000 miles on it , on a island which up until now temps have been over 35c for the last 3 months....so a hot place all yer round nearly

apologies if this has been asked before...
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Old 09-25-2023, 05:52 AM
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BMW LL specs is not that important. Just get any ACEA C3 5W-30(-40)oil. Anyways more important is to keep the change interval reasonable. I've changed oil and filter max 25 tkm (or once a year) even if the indicator is still in green.
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Old 09-25-2023, 07:38 AM
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10,000 mile oil changes will hurt any engine. 3-5k is my max on anything.

Interesting Nissan GT-R engine builder interview:
https://www.youtube.com/watch?v=FlmTPH_5UmQ

"Castrol = best oil for the money"
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Old 09-25-2023, 07:54 AM
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Quote:
Originally Posted by X5chemist View Post
10,000 mile oil changes will hurt any engine. 3-5k is my max on anything.

Interesting Nissan GT-R engine builder interview:
https://www.youtube.com/watch?v=FlmTPH_5UmQ

"Castrol = best oil for the money"
3-5k doesn't hurt more than your wallet but with M57 engine is a bit overkill.

By what means Castrol is the best oil for money?
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Old 09-25-2023, 09:16 AM
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The Nissan GT-R builder explains oil changes in his interview. He asks, how long to you want to keep your engine running? Long interval changes = shorter life. Short intervals are expensive. His suggestion is buy the cheapest certified oil and change it 3-4k miles. The engine builder states the best bang for your money on intervals and oil money spent is Castrol.
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Old 09-25-2023, 10:45 AM
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okays thanks for feedback....much appreciated
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Old 09-25-2023, 12:15 PM
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@X5chemist Your engine builder has no idea what he is talking about, sounds like a chat GPT thing again. (I didn't click the link just going by what you are saying) btw the last 2 statements in your post pretty much contradict each other.
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Old 09-25-2023, 05:43 PM
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The Nissan GT-R hands on engine builder/designer in his interview, says find a balance between oil costs and intervals based on your driving habits. Most importantly, how long you plan to keep your ride on the road. I think everyone on this board will keep their ride on the road as long as parts are available.
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Old 09-25-2023, 07:15 PM
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My M57 and M57N engines are just fine. Now running at 406 tkm (E39) and 365 tkm (E53). Both by previously mentioned intervals and mostly with Teboil Diamond diesel 5W-40 oil (this oil is manufactured in Hamina, Finland). 62,90€ / 10 litres.
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Last edited by Clavurion; 09-25-2023 at 07:21 PM.
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  #10  
Old 09-25-2023, 09:58 PM
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You could just use Castrol Edge 5W-40 which is LL-01 rated and don't worry about it.
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