I have been using Shell Rotella T6 (fully synthetic diesel oil, 5W40) for many years on four different motorcycles. It is a high quality oil that does not cause issues with wet clutches. Also has a robust additive package. Regular price at Canadian Tire is $50 for a 5 Litre jug. (At least here in NB) Right now, there is a sale on the stuff in 18.9 Litre pails (5 US gal). Regular $157.49 marked down to $125.99 ($6.67 per Litre or $33.35 for 5L). Better still, there is a rebate available from Shell amounting to an additional $35 for the 18.9 Litre pail. https://www.shell.ca/en_ca/business...r-fuel-economy.html#iframe=L0RJWS90NXQ2L2NhLw That makes it $90.99 for 18.9 L or $4.81/litre. (Just over $24 for the equivalent of a 5 Litre jug.) Compare that to the price of Mobil, Amsoil or any other synthetic motorcycle-specific oil!! This will be the second time I have bought the big pail. I have a plastic pitcher that holds a little over two litres so I fill it from the pail and use that to pour into the crankcase via a funnel. Easier than pouring out of the pail directly and easier than pouring out of the 5 Litre jug. Using this oil almost exclusively, I put 295,000 km on my 2007 Yamaha FJR. Sold the bike last fall - engine, transmission and clutch were all original and it is still running perfectly for the new owner. Engine has never burned a measurable quantity of oil between changes. I typically change oil every 8,000 to 10,000 km but don't worry if it goes over that on a long trip. (New oil filter every second oil change as per Yamaha.) I figure that 12,000 km in a couple of weeks is easier on the oil than 5,000 km of stop-and-go over a couple of months.