First of all apologies as my following explanation is quite lengthy,but I'm sure you will find it of interest as we are owners of the fk2.
Just to let you all know I had the oil, lab tested and the findings came back with there was a slight ingress of fuel in the oil, and said that the viscosity had lowered slightly. In addition there was a full report on what else was suspended in the oil, this was called a spectrochemical analysis and the particals and chemicals were measured in parts per million (ppm) what is analysed/looked for are metals and chemicals in the oil.Things like iron particles ,chromium,molybdenum,copper,lead,tin,nickel,silicon, sodium,boron,vanadium,insoluble matter(soot),calcium, phosphorus,zinc, magnesium and barium.
They are looked for and their amounts if any are found reported in (ppm) and all are relative to a modern engine.Its parts and bi-products of combustion and of course additives that are put in by the manufacturer of the oil. The important thing is how many (ppm) of the above are found,in your car's oil will tell you the condition of your engine. I discussed the findings of my test with the technician and all readings except for two were good .The two were 1. A slight loss of viscosity due fuel ingress in the oil and was still ok to drive . 2. Silicon level raised (basically dust) indicating a need for attention to the air
intake filter. I did check the engine air filter and yes it was ready for changing which I did straight away.
I naturally assumed it was checked at the last service. One to remember for the future. It just shows that the test did highlight 2 important things in an engine and I think there certainly is a link between the contaminated air filter and slight ingress of fuel in the oil as a air filter with lots of dust in itcan cause the engine to run rich.
Since the report I have given the fk2 a blood transfusion with 5.4 litres of Castrol Edge Professional H
0w-20 fully synthetic oil. Direct fuel turbo engines are known for fuel ingress in the oil some very slight like mine and some more,causing the level on the dipstick to rise. Before starting this thread I did look online to see if any fk2 type R's were reported with this problem but didn't read of any. That's why I asked you all . When cold starting a dfi turbo engine you need to get the engine up to temperature as soon as possible, what's not good for the engine on a cold start is idling for long periods, idling on the drive only puts rich petrol through which can stick to the engines cold bores and mix with the oil and will eventually find its way to the crankcase.If you do lots of short journeys is not good for the engine where only a few miles are covered and the engine doesn't get up to temperature. To help any build up of fuel in the oil you regularly need to go for a long run say 100 miles and drive without revving high in a non sporty mode so that the oil gets hot and should evaporate any fuel in the oil.
Regards Fred.