Quick question to the people that know: My old MD5A engine runs on 15W/40 oil. I have paid the inflated volvo price previously but I was looking in Halfords and the same grade oil is at least half price.
Are any of you using other brands of oil? Even Halfords own? £12.99 for 5L. The only thing I wasnt sure about was within 15W/40 there seems a variety of oils: mineralised, non mineralised etc..
Which is the right one??
Any advice much appreciated.