Service interval was 4000 on the first 600s,this increased to 6000 (in 2000 model year IIRC). No mechanical difference, so no worries about going to 6k - I'd be changing it sharpish if you've done 10k though > Sent from my HTC Desire S using Tapatalk 2
My toes are just fine, Darrsi. It changed in 2001 model year, so doesn't feature in the supplementary manual either.See here