A quick check for HT lead breakdown: Run the engine in the pitch dark, look at leads / distributor cap / ignition coil. Insulation breakdown will be apparent when you see the sparks (which may well be quite faint).

The oil filter, whilst it probably does need changing (do it at the same time as the oil change) won't cause a stalling problem.

The problem is going to be either sparks or juice, you need to decide!

Good luck,

John