Auto-Trail Toilets & Sanitation
(Expedition, 2025 Model Year)
View official manual on manufacturer's site ↗Also Fitted To This Caravan
Frequently Asked Questions
Q: How do I prepare the Thetford cassette waste-holding tank on the Expedition 66, 67 or 67 Flex before using the toilet?
Take the waste-holding tank out through the service door, stand it up so the pour-out spout faces upward, then take the cap off. Add the recommended amount of Thetford waste-holding tank additive plus roughly 3 litres of water so the bottom is covered, refit the cap, and slot the tank back into place.
Q: How do I prepare the Thetford cassette waste-holding tank on the Expedition 68 before using the toilet?
Pull the safety catch upward to release the waste-holding tank, then slide it out, tipping it slightly as it comes free. Stand it upright with the emptying spout facing up, unscrew the cap, and pour in the recommended amount of Thetford toilet fluid plus about 2 litres of water to cover the base. Screw the cap back on, return the spout to its stored position, then slot the tank back in through the access door and re-secure the safety catch.