Firstly, I have been trying to search on this forum, I put "BMW" in the advanced search options for subject or content, I set posts in the last 10 years and go 0 responses, and selected all forums for the search. I think something is a miss with the search surely!? Anyone any idea why?
Anyway, I gave up searching (and not getting any responses) and trawling so decided to open another thread.
This is all about the E39 M5 oil debate; 10W-60 or 5W-30 (the oil recommendation was changed in March 2000 to 5W-30, a BMW long life oil).
For a lot of debate and information on this topic visit:
http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/142633-what-bmw-has-say-subject-oil.html
I currently own an E39 M5 2002 model and it's running 10W-60 Castrol EDGE currently with no real issues. The motor seems fine and does consume perhaps a litre in 3000 miles or more. I am going to be due a service soon, and want to get my choice right. I am not a race car driver, I am often steady on my commute to work. However the M does come out to play and I do 'give it the beans' as it were on some of the twisty roads near me when I get the chance. The car is garaged most of the time and it's based in the UK so not experiencing the extremes of climate really. Max range I guess would be -15C (AT A PUSH) to 30C (no laughing, I know it's the UK but this does happen every now and then).
My questions are as follows:
1 - Is Castrol EDGE 10W-60 really identical to Castrol TWS?
2 - The reason for the oil change from TWS to 5W-30 is alleged to piston ring design changes, does this seem plausible to members on this board?
3 - Some allege the that S62 (E39 M5) engineering recommendation even for post March 2000 engines is still TWS and not 5W-30 does anyone know of its origin or agree with this recommendation?
4 - Is the TWS and 5W-30 choice a major decision bearing in mind my driving style, i.e. is there a difference for me?
I'd encourage any expert or enthusiast opinions and additional knowledge. I am here to learn not stamp my own point of view that's why I am asking
I would also like it if others with the same questions as I have would contribute too with what they have heard.
Thank you all in advance.. I hope this hasn't been covered before.. if it has please put up a link I can follow..
Regards
Craig
Anyway, I gave up searching (and not getting any responses) and trawling so decided to open another thread.
This is all about the E39 M5 oil debate; 10W-60 or 5W-30 (the oil recommendation was changed in March 2000 to 5W-30, a BMW long life oil).
For a lot of debate and information on this topic visit:
http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/142633-what-bmw-has-say-subject-oil.html
I currently own an E39 M5 2002 model and it's running 10W-60 Castrol EDGE currently with no real issues. The motor seems fine and does consume perhaps a litre in 3000 miles or more. I am going to be due a service soon, and want to get my choice right. I am not a race car driver, I am often steady on my commute to work. However the M does come out to play and I do 'give it the beans' as it were on some of the twisty roads near me when I get the chance. The car is garaged most of the time and it's based in the UK so not experiencing the extremes of climate really. Max range I guess would be -15C (AT A PUSH) to 30C (no laughing, I know it's the UK but this does happen every now and then).
My questions are as follows:
1 - Is Castrol EDGE 10W-60 really identical to Castrol TWS?
2 - The reason for the oil change from TWS to 5W-30 is alleged to piston ring design changes, does this seem plausible to members on this board?
3 - Some allege the that S62 (E39 M5) engineering recommendation even for post March 2000 engines is still TWS and not 5W-30 does anyone know of its origin or agree with this recommendation?
4 - Is the TWS and 5W-30 choice a major decision bearing in mind my driving style, i.e. is there a difference for me?
I'd encourage any expert or enthusiast opinions and additional knowledge. I am here to learn not stamp my own point of view that's why I am asking
I would also like it if others with the same questions as I have would contribute too with what they have heard.
Thank you all in advance.. I hope this hasn't been covered before.. if it has please put up a link I can follow..
Regards
Craig