I've been slowly working to get my AC fixed. I guessed (wrong) that it was the engine over-temp sensor. My next step was to take it to the dealer and their tests show that the system is blocked and their guess is that it's the expansion valve (but no promises). Note: They first bragged that they could get the expansion valve here in Canada in a day. They said most parts for 80 series cruisers would take about 6 weeks to bring into Canada . I was tempted to tell them to just call C-Dan and get pretty well anything in 4 days. I've decided to replace the expansion valve (and dryer) myself and then have someone recharge the system. In reading the FSM I see that I need some oil is needed during the connection of the fittings ect... They call for ND-Oil8. Question #1 is: Where should I get this ND-Oil8 from? Dealer? or ? Question #2 is: They recommand to seal off the lines to prevent mositure and dirt from entering the system while it's open. Any recommendations on how to plug the lines? anything special? Any other tips for expansion valve replacement are welcome. Reading the FSM doesn't sound too bad. The dealer wanted like $600 Canadian (including recharge).