clio

why do you say hand tight not sufficent? i have always hand tightened mine and never had issue

loftust

I used to have the same school of thought on this one, but have seen the consequences of loose filters on here which resulted in a torched S

I don't like to blow my own trumpet, but I do have a damned good grip, although I don't trust that any longer.

The S is different from many other vehicles in that it revs so high. Higher revs = more vibration = more chance of it coming loose.

I'd check your filter IIWU...better to be safe than sorry. The tool only costs ~ £10, so it's not exactly an expensive choice

richmc

If you ever do have an issue it's a big one.
Have a look at-

https://www.s2ki.com/forums/index.php?showt...&#entry10219253

Esy little mod.

EDIT - Opie are doing their special on the Castrol, 4L £34.55 + 1L free with a gay bag to put it in with velcro on it!

Hockenheim

I suspect it depends on how hard you are able to hand-torque the filter. Some of us are stronger than others no doubt so would be able to "hand-tighten" it sufficiently without the use of tools. It is cheaper to ensure that it is put on properly instead of having the filter come off and cause damage to the engine/car.

richmc

Honda recomend tighten till contact then 7/8 of a turn extra, thats quite a bit. Did mine (K&N) by marking it with tippex.