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xlr8nflorida · 10-28-2013

Mobil 1 synthetic 75/90 gear oil for the rear axle. I'd use 2 small bottles of GM Additive.

I'd use BMW Castrol in the Transmission.

BMW oil 3 Liters TWS 10w60 synthetic oil - Change it every 10-12K miles if you love your ZF-6.

Redline has good products but I'd use the BMW in the Transmission for various reasons which I don't have time to type out right now.

10-28-2013	#8
xlr8nflorida Join Date: May 2008 Location: USA Posts: 1,093	Re: gearbox/transmission noise Mobil 1 synthetic 75/90 gear oil for the rear axle. I'd use 2 small bottles of GM Additive. I'd use BMW Castrol in the Transmission. BMW oil 3 Liters TWS 10w60 synthetic oil - Change it every 10-12K miles if you love your ZF-6. Redline has good products but I'd use the BMW in the Transmission for various reasons which I don't have time to type out right now.