The one I bought was bog standard I believe, Mann filter W713/28 - bought for 2 reasons - it was what was one the car and I had only done 1k miles since purchase and plan to change frequently anyways so guessing filter will never be under much stress so to speak.

And I used Comma 5w50 Motorsport oil - again as recommended by the seller. Oil Filter £6 and oil £26 for 5ltrs from a local factors (though had seen it for a lot more elsewhere)

Hi,

I use FRAM PH4952 in my 1.4 K series. These Fram filters (apparently) use a finer filter material, with increased oil flow. I also use the same Fram type on a 1965 sprite and noticed a far quicker oil pressure build up, reducing that scary no oil for the first few seconds, not a problem with the K series.

Hope thats usedfull

Cheers