on 09. Feb 2011 at 17:03:
slightly off topic i know but my shed sometimes throws up a low oil level on the
mid during a good run at motorway speeds

( NO oil presure light or rattles from the engine / engine runs sweet )
5 mins after you have slowed down, the light disapears
pull over and the dipstick shows oil at least half way up the stick.
anything below 60 mph and you get no problem.
i've had the sump off
oil pickup was clean so i just cleaned the level sensor and put it back together. still the same problem

any idea's welcome
At high speed the oil gets hotter and thinner... If the level is about halfway or below this can cause the light to come on. The level check is a little over-sensitive IMO but better the "false" readings than not getting them when needed