Duckhams engine oil offer In the latest newsletter from the Federation of Historic Vehicle Clubs (FBHVC) they have an engine oil offer "exclusive to FBHVC members using the code: FBHVC1988". Posted: 180427 In the latest newsletter from the Federation of Historic Vehicle Clubs (FBHVC) they have an engine oil offer "exclusive to FBHVC members using the code: FBHVC1988". Their SAE 30, 20W-50 or SAE 40 oils provide "optimal friction protection for classic engines" and are "exceptionally stable at all temperatures". Order your oil at www.duckhams.com with free delivery on all online orders over 29.95.