Thought this might interest some of you…
Used also for testing Aero engine oils.
Very cool JFK it takes the guess work out of oil changes
Exactly ! I am wondering whether my recent stuck open injector diluted my oil …
Engine only ran for about a minute before I shut it down and it got trailered to CN’s
I’ve ordered one, so will see if I need an oil change before silverstone next week I’ve also got an old Range rover V8, that should definitely produce an amusing sample 
I’ve ordered one too. Nice one JFK.
I also picked up 4 x 5 litre bottles of Mobil 1 from Asda’s after the tip off on here too!
Changed my oil today after 1 year running including one Anglesea trackday.
Did an Oil Spy test on the oil and was pleased that all appears A1…
No Sediment
Little Oxidation
No Water contamination
No Fuel contamination
Oil was Mobil 1
Here’s a scan of the result (top left) With the instructions and check chart as background…
Hasn’t scanned too well but it’s readable !
Had one of those done at the Doc’s last week!!!
GEEK ALERT!!!