We have a 1981
Trillium 5500 (18 feet) with separate toilet and shower and a black water holding tank which
leaks. Naturally the prior owner failed to mention this item (really wouldn't have made any difference as we loved the trailer and would have bought it anyway). At this point my idea , rather than replacing the holding tank, is to remove the holding tank altogether and install a Scamp/Casita type toilet (the one where the actual holding tank is immediately under the toilet and inside the trailer). Reasons: replacing the holding tank is kinda a lot more labor intensive, at least it seems so. Also having the major portion of the holding tank inside would seem to make cold (not below zero cold) weather camping more feasible. I would appreciate input from anyone who has tackled this or a similar installation. As always pictures would be appreciated. Thanks for your assistance. Lee