Cats and Deers
chevrolet small blocks
Purolator oil filter L25195 fits my 2001 Land Rover Discovery 2 and it may fit more models also.
1967 Plymouth Belvedere 2 with a 318 with headers.
No oil filter, the YZ125 is a 2 stroke.
Air filter, oil filter, petrol or diesel filter.
Fram PH/2
I think you what you have is one oil filter and one fuel filter. The fuel filter is a spin on cartridge and looks similar to an oil filter. The oil filter is near the bottom of engine and the fuel filter is near the top (at least on my engine).
4 quarts without oil filter, 4 1/2 with oil filter
4 1/2 quarts with new oil filter 4 with old oil filter
You can't.
If it is a 2 cycle engine, it has no oil filter. If it is a 4 cycle engine, the filter is located under the engine cover.