Just been to Costco and have seen some veritable motoring bargains. I picked up a pack of Rain X glass cleaner and treatment for about £5.99 + vat. Also got one of those rubber wiping blades with which you dry your car for around £3.50 + vat. Also saw the cheap and nasty Chevron synthetic oil for £9.99 and Mobil 1 for £21.99. Also of interest was a twin pack of 1 litre STP injection cleaner, enough for 4 treatments in each bottle. What do you guys reckon to this?