HI all, i have been spending the last week trying to understand why the silicon is at 17ppm. first thought as dirt/sand, I have took the air box off and the car die with in 1 second, so i don't think it is a leak in the breathers. i have a had a look at the air box and it has two small holes but they are perfectly round and are before the filter. no cracks in air box. I am trying to figure out where the extra silicon is coming from. if you can impart any knowledge on UOL as i am new to this carry on. I have read that it can come from,dirt water pump sealant or a few other bits but they all were for new cars, is there any other source of it. Thanks for all your help