Asda's doing 4l of Castrol GTX for petrol/diesel 10/40 & 15/40 for a tenner.
J joinerman Well-Known Member Joined Mar 23, 2010 Messages 2,912 Garage Dec 31, 2011 #1 Asda's doing 4l of Castrol GTX for petrol/diesel 10/40 & 15/40 for a tenner.