Need advice with what brand of brake fluid to buy...

The stuff in the reservior now is yellow, a neutral yellow....

Which brand of fluid do I buy for the car?

Since Fastlane does not have any available please look at what is available on this page...

http://www.***************/catalog/lookup_keyword.cfm?VehicleID=1356364&CFID=256512&CFTOKEN=25542723

please type in "brake fluid" in the search box...
I know I should not get the blue racing stuff... what about the other two..?

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2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)