I should of added that i don't have to pay for the oil... one of the few benefits working in the LGV trade.
Are you sure you're not in breach of the warranty terms by changing the oil so often? Is there any evidence of increased failure rate for FD's by using 12 x the amount of new oil than the published service intervals state?
.
.
.
.
.
.
.
.
.
.
. think I will leave now and


