5 liter jug of high quality German Liqui-Moly Racing 4T 20W-50 engine oil. This is the regular mineral based engine oil with API-SG/SJ/SL rating. This is enough for 1 oil change on all Oilheads, K-bikes and Hexhead R1200 series bikes with 1 liter left over for topping up. Also enough for 2 oil changes on an Airhead bike with 1 liter left for topping up. Compare to BMW's retail price of $41 for 5 liters and save here!