S2 E-Type Oil Filter [original not spin-on]

[TRDejaVu]

Hello All,

When I got this car last year, I purchased oil filters from one of the usual suspects. They sent me the Coopers FA4012D. It comes with two o-rings; thick and thin. Which one am I meant to use?

We think the engine is from an XJ6 if that matters.

Thanks

 

[Keoke]

Hi the one that fits the sealing groove correctly.--Fwiw-Keoke

 

[MikeP]

I always used the thicker one on my series 1. It fills the groove side to side and almost to the top so that there's enought to compress against the cannister and it won't have room to move out from under it.

 

[TRDejaVu]

Hi the one that fits the sealing groove correctly.--Fwiw-Keoke

When I got the car it had a small filter leak and I seem to recall during the initial oil change that I took a thin one out. It still had a small, but manageable, seep afterwards. Recently that got worse and neither o-ring seems quite right (thin one looks too thin, thick one has a slightly smaller ID) hence the question.

I have a couple of new filters and the o-rings are the same with them.