I have a 07 diesel manual S-Max (which you have serviced a few times) and was driving back home on Saturday evening when there was a light thud and a whining sound coming from the engine when we needed power - perhaps the turbo / EG connector? The Engine Fault light came on intermittently and the whining subsided when cruising slowly - never went above 2500 rpm. The Ford user manual did not state we should stop the car so we carried on the remaining hour's drive home. Engine temperature stayed normal, no oil pressure light came on and there were no other noises or smells.
I parked the car on arriving. Noticed a small oil spill on the drive in the morning - probably an eggcup's worth of oil. Tried to start the car but starter motor cut out - lights work but the battery may be low as the electric windows seems to struggle to go up and down. Today I inspected the oil level - it is normal and I see no debris in the oil.
I need your guidance - do I:
i) Try to jump start the car so that I can drive it to garage? (should i try pushing the car in 4/5th gear to check the engine turns?; is the starter motor powerful enough to damage the engine if there is a possible hydrolock situation?)
ii) Get it towed - I may struggle with steering and braking?
iii) Resort to getting the car recovered?
Can you give me your advice and comments at the earliest opportunity please?