Oku Yama (Deep Mountains) is the next ink from Sailor’s Jentle Four Seasons series I like to present. Oku-Yama is somehow a successor of very popular but discontinued ink also by Sailor called Grenade. I have never used Grenade, so I can’t tell how close or different these inks are, but by reading some comments here and there it seems that they are pretty close in terms of colour. The colour is well saturated burgundy with some pink-purple hues clearly visible with finer and less saturated lines or where ink is slightly diluted. Oku-Yama is definitely darker and less purple when compared to very popular Pitot Iroshizuku – Yama Budo. This means, that these two inks are not equivalent to each other as for example Sailor Jentle Souten and Pilot Iroshizuku Kon Peki or Pelikan Edelstein Topaz may be considered as. Similarly to other Sailor Jentle Four Seasons inks I reviewed (please see Souten, Tokiwa Matsu and Yama Dori) Oku-yama shows beautiful sheen. In this case sheen in nor rad/magenta but golden-green. Sheen is very apparent especially in places where ink concentration is rather high and also where surface of the paper is rather smooth like Rhodia or ClaireFontaine. With copy-like paper type, sheen is not really pronounced. Oku Yama does a little bit of gradual shading too., sometimes enhanced by golden-green sheen which adds additional depth to written line. With wet broad nibs or flexible one, produced line can be very dark. However sheen should be visible more.
Ink properties are very consistent with another inks in Jentle family and are chracterised by decent flow and good lubrication. Ink feels very smooth and writing with is very pleasant. On fountain pen friendly paper types it does not bleed through or feather, but it might on absorbing inexpensive copy paper or similar. Drying time varies but in general is rather quick. On copy paper it dries almost instantly within few seconds, but on smooth paper may takes significantly longer to dry up fully. Despite it high saturation it does no smudge. Sailor Oku-Yama is not water proof, but it makes it rather easy to clean. However, it may stain some types of material. Similarly to other Sailor Jentle inks, Oku- Yama smells. I do not mind, some people might do.
Is it worth attention? Yes, definitely! The colour is gorgeous and well balanced (not too pink or too purple) and for daily writing I prefer this ink over Pilots Yama-budo. I have this ink for nearly second year and I am not going to stop using it at all. I had various pens inked with Oku-Yama and all behaved well and writing experience was pleasant. Since last few months I have it permanently with my Pelikan 215 with medium nib and this is one of the best ink/pen combos I have. Pen writes every time, everywhere on every type of paper with no skipping or starting problems. Pen become extremely reliable and I believe Sailor Jentle Oku – Yama is greatly responsible for such great performance.
Highly recommended! If you are not much into red, burgundy or purple inks, you definitely should give it a go and try at least sample.