maXbimmer Forums - View Single Post - Royal Purple Syncromax in Getrag 420g 6 speed

daveyto · 05-19-2009, 04:53 PM

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.

05-19-2009, 04:53 PM	#7
daveyto 2nd Gear Member Join Date: Apr 2009 Location: Toronto Posts: 213 Car: 2003 540i 6speed My Albums	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.