Hi, as seen in the following I have had high silicon as well as fuel dilution. After the first oil analysis I changed from a K&N mesh style filter to a paper filter and this has not had any affect on my silicon levels. I have no idea if it can have any effect but I have a silicon inlet and inter-cooler piping. My PCV set-up is stock so I have got a small amount of oil going through the system, not sure if this can pick up any silicon. I have not recently used any silicon sealant on the engine either.
Also after the first analysis, I cleaned my MAF and ran injector cleaner in the car. I have also noticed a lot fuel correction in the low airflow (around idle) area of my car, around 9-11% fuel is being reduced in this area. This makes me think that I might have an injector that is not sealing correctly and my car is pulling fuel in closed loop fueling to obtain a stoichiometric ratio, which will actually be 3 lean and still one rich cylinder. Could this be my source of high fuel dilution? For the second analysis I had been doing some longer drives (30-40 minutes)regularly so I do not think the issue is simply due to short trips.
Any input on either issue or anything else with the UOA would be much appreciated. Bellow are the results as well as a learning view from my car.
VIRGIN OIL DATA
ANGLOMOIL RASYN GT40 5W40[email protected]
100C 14[email protected]
MODEL LIBERTY/LEGACY GTB