Requirements for ten viscosity grades of each of two types of lubricant. Type A lubricants being additive free petroleum products, and type B lubricants being additive containing petroleum products or partially or wholly synthetic products.Cross References:BS 604BS 1752BS 2000:Part 0:Addendum 1BS 2000:Part 15BS 2000:Part 34BS 2000:Part 71BS 2000:Part 139BS 2000:Part 154BS 3195:Part 1BS 4231BS 4306BS 4434BS 4580BS 6725Health and Safety at Work etc. Act 1974Alcoholic Liquor Duties Act 1979Methylated Spirits Regulations 1987