The oil capacity for a 2000 Mazda Protege with a 1.6 Litre engine is 2.9 litres with an oil filter change ........... it is 2.7 without an oil filter change but who in their right mind would change an engine's oil without changing the filter is beyond me ??!!
The oil pressure sending unit is normally on top of the oil filter. However, I have a 2001 Protege also and I can't find the oil filter! Could you tell me where the oil filter is, and I'll be happy to locate the pressure sensor for you. Thanks!