Good morning. Hope this is the correct place to post this query.. Drove 400 miles yesterday, the last 5 miles of which I noticed a slight deepening of the engine tone. Drove 2 miles this morning and the red oil pressure warning light came on. I pulled over immediately and checked oil as suggested in manual. This seems fine. Please could someone advise best next steps (note I have virtually no mechanial knowledge). I have breakdown cover and am close to local garages. thanks in anticipation.