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Old 05-19-2009, 04:53 PM   #7
2nd Gear Member
daveyto's Avatar
Join Date: Apr 2009
Location: Toronto
Posts: 213
Hi Mark,

I have heard that if you have a limited slip diff that it requires an "extra" additive.

Have you heard of this?

Also, I spoke to the dealer and they told me that my car has a limited diff after I supplied them the serial number. However, I have heard that the LSD only came on e39 M5's. IS this true?

Any Ideas?

BTW...The Royal Purple feels just as lousy as the BMW LT-1 with respect to gear changes...I guess the guys on Bimmer fest were imagining a "noticable" improvement in shifts. I for one dont feel anything better..perhaps I have to give it more time.
Perhaps the only cool thing about Royal Purple is the color.
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