curious if you do short journeys or use wrong grade of oil.
Short journeys yes, and oil no i get it from Ford... never thought about the gasket but will get one or two just to be on safe side
short journeys bung up systems on a number of cars i notice, a good run will clear the cobwebs out and adding a fuel cleaner to fuel every now and again will keep it clean,opels are well known for egr problems lol
I tend to use high octane fuel hoping it will keep engine nice and clean I will be servicing it next weekend all being well, one other thing is it worth getting a k&n Panel filter for it £33
about 4 air filters worth i guess?