Inktend / Ink library / Motor Oil
Robert Oster
Motor Oil
An Australian ink maker known for saturated, often sheening colors and frequent small-batch releases.
Specs
About Robert Oster
An Australian ink maker known for saturated, frequently sheening small-batch colors.
Paper & pairing notes
Browns tend to photograph and scan a little darker than they look in person — worth testing before using one for anything that will be digitized. Sheening inks need the right conditions to show off — a wetter nib and a coated, less-absorbent paper (Tomoe River and similar sheets are the community standard) let the ink pool slightly and separate into its second color as it dries. On cheaper, more absorbent paper the sheen effect will mostly disappear.
Storing and using the bottle
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight — most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
Frequently asked questions
Similar shades
Color shown is a close digital approximation of a typical swatch, not a calibrated color match.