I've owned my Astra 2.2 SRi since new and have always had 5w/30 put in it by Vauxhall, when I do my interim oil change I've always used Halfords GM Spec 5w/30.
I've started reading that some people use 10w/40.
What the general opinion of what oil to use. The car has 63k miles but does use about a litre every couple of thousand miles.
I've started reading that some people use 10w/40.
What the general opinion of what oil to use. The car has 63k miles but does use about a litre every couple of thousand miles.