I have owned a SAAB 9-5 Estate1.9 JTDM Manual for some 18 months. The car was first registered in March 2006 and has covered 52,500 miles. The kerb weight without driver is 1,620 kg and I intend to use it to tow a caravan of 1,360 kg max permitted weight. I am aware of the potential reliability shortcomings of this engine as per your car-by-car breakdown. I run the car on 5-30W fully synthetic oil changed every 7,500 miles. I have had the cambelt and waterpump and pulleys changed. Is there any driving/maintenance regime that you can recommend that will minimise the risk of potential failures that you outline? I understand that this engine is used in many alternative installations. Presumably these engines can run reliably to 150k plus? Alternatively can you recommend a reliable suitable alternative vehicle for the task?