Hello, offered with a keen Buy It Now is a 5L sealed bottle of GBR Technology GBX2011C gear oil. These bottles are ex F1, this particular batch was from the Caterham team. The gearbox oil in a modern Formula one car would be changed regularly, to maintain the condition of the delicate internal parts. Ideal if you want the correct fluid to keep your expensive investment track worthy, with the correct fluids. 

I usually like to post items the day after auction ends, often sooner, so prompt payment is rewarded with swift delivery. Collection from our Hereford workshop is more than welcome.