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Old 10-08-2011, 12:22 PM
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540 M-Sport 540 M-Sport is offline
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Location: Seattle, WA
Join Date: Apr 2004
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Mein Auto: 01' 540 M-Sport, Scuderia
Originally Posted by Jason5driver View Post
I would use the Castrol 5w-40 or the Mobil 1 5w-40 before using the Mobil 1 5w-30.

Castrol 0w-30 is close to 0w-40, and is LL01, which is good.
There is NO way I would use a 0w-20 in these cars, no way.
20 weight is no where near the 30 weight you need for your E39.
IMO, 0w-20 is only out there because of the governments BS of trying to run more efficient cars.
Jason, you should definitely read this article by Aehaas on oil and oil viscosity, I think you may have a different opinion about 0w-20 after reading it....I do. I am still unconvinced I will use 0w-20 outside of a manufacturer recommending it, but Aehaas makes a good argument for it:
540 M-Sport package (Canadian market), factory Bluetooth phone integration, factory M-Audio 10" dual voice coil subs, Homelink, M5 rear stabilizer bar, M5 rear subframe braces, H&R 15mm wheel spacers, ST X (KW) coilovers, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, Strong Strut front upper stress bar, BMP strut tower reinforcement kit, USA Spec Ipod/Iphone integration.
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