Oil pressure switch

[fazersharp]

I think the reason is this. If the engine is cold - that means that all the oil that can flow back down has done so. After a short warm up and a couple of mins wait - there is still oil around all the parts that has yet to drip back down into the sump window area. I does seem a bit rubbish to have to read the level via this procedure as it just says a few mins after warm up but the longer you warm it the hotter the oil which will more readily/ quickly drip back down to the window area then the longer you leave it the more oil will drip down so there are too many variables. I would be much better if the procedure was from cold - cutting out all those variables.This would mean that the window would have to be higher as when cold all the oil that will do has dripped down and is near or above the top. I wonder if the read from warm procedure is just because they could not fit a window higher.