Re: Cat advice needed
colinpI'll never understand why People ask questions when they could just Google it themselves
With motor oil you get contradictory answers. Some of them are things like Audi (say) only recommends the use of a particular brand. Halfords had loads of car specific oil last time i went there. Oddly it was £10-20 a litre while the 5/30 and 10/40 was £30 for 5 litres. If you ask an assistant at Halfords they are told to recommend the expensive stuff.
Modern ICE petrol cars are ok with 5/30 or 10/40. Unless you are going to very cold places you don't need to worry. Mid-West Canada in winter rather than the West Midlands in Spring.