I recently bought a 57 plate Freelander 2 TD4 SE. I bought it to tow a caravan and previously have had no faults. However the first time that I pull the caravan with the car, after travelling around 30 to 35 miles the car has lost power. This has happened twice, the first time they told me it was down to low oil level. Oil was topped up and the car ran okay. Today it happened again, and was wondering if anyone else has had this problem and if so what was the fix?