Reply to "Clunk in rear driveline. Advice needed."

bosswrenchMember

Rob, the ZF Manual says 'fill is 3-1/2 liters of 80W90 gear lube'. Personal experience says you cannot drain that much out without full disassembly, and nowadays, nearly all gear lubes contain limited-slip additive. IMHO, the additive will not hurt anything, and may help some cars (quoting Lloyd Butfoy of RBT Transmissions).

Adding is slow & messy due to the thickness or the lube. Fill to overflowing, go have a cuppa, come back and repeat. May take 3 tries to actually fill to "overflowing", which is the proper quantity. I use a funnel with a flexible hose, and a drip-catch underneath.

3/15/142:50 PM

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