Looks like a load of rubbish. Oil analysis is usually done by comparing the results of mass spectrometry of a sample of the oil when new and when used - not soaking it up a peice of blotting paper and comparing the shades of brown.

Edited by Hamsafar on 06/01/2014 at 21:38

"After 15 minutes you will be able to see whether there are unusually high levels of grime, moisture or fuel in the oil, things that can indicate an underlying problem with the engine"

Grime

moisture

fuel

Sounds a limited test but Ok if those are what you need to test for,, Many tests are for metals - bearing wear. Clealry not inlcuded.

You get what you pay for. or so I hope.

This used to be a standard test in the military vehicle test kit for assessing the quality (combustion product loading in a detergent oil) of diesel engine oil, along with a viscosity comparison to a new oil sample contaminated with (5%?) diesel and clean oil, in conjunction with a "Speedy" moisture test (put some oil in a can with a pressure gauge attached, add calcium hydride, shake and pray).

It has been replaced with a more modern test kit (Kittiwake) and a programme of spectrographic oil analysis, but its roots have some validity, if I recall correctly the blackness of the spot after a period of resting (24 hrs?)was compared to a standard sample in a kind of "go/no go" test.