For what it's worth, I've been compiling an all-inclusive list of all of the stuff we need to know about our cars. here's a bit:


Oil filter oring sizes (All Viton)
3" ID X .139" (1/8") AS-234
22 mm ID X 3 mm
17 mm ID X 3 mm
10 mm X 2.5 mm

I don't know how they figured out the size for the large o ring for the cap seal, but it is not a standard metric size. It is an ASA (US spec) size, hence the AS-234).