hello all i have smoke coming out of the dipstic when the dipstick is pulled out 'its not thick black smoke'.i've found out this can be fixed or reduced if the pcv system is changed or rebuilt.is this true? and is there a kit that can be purchased to do this? i'm not doing it myself as i don't have a driveway and anywhere to do it and the mechanic i use 'my uncle who works on police vehicles strange enough'hasn't done one of these before? would apreciate help if possible many thanks james sheffield