Drain plug crush washer Al vs. Cu? | BMW S1000RR Forum
Been looking for a source for crush washers for the oil drain plug. Wunderlich has a 16x20 COPPER washer, but not in ALUMINUIM. The last time I changed my oil, the washer was ALUMINIUM but the spares I got at the local independent shop were too tight (and fat), so I prayed and re-used. ... I am thinking that BMW decided to use Al …
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