Hello Robin,
Thank you for your answer.
When i did the oil change, i found a gauze strainer on the bottom of the sump. Where there is the oil pick up, and i have cleanded that and repalced it.
when i have opened the iron round cap at the side of the engine, where i belive in the earlier engines there was anoter strainer, i think i have found a blanking plate only, I have tried to extract it, but it doenst seems to come out. So i have not forced it. It didnt seems to be a strainer element you can extract so i left it alone in order to not damage it.
The car has an external pur o lator filter. I have cleaned it and changed the paper cardringe inside. If i understand correctly, you say that the original set up has an inversed flow that can destroy the paper cardrige as the pressure arrive from the wrong side?
Thanks!
Edmondo