Andre schreef:Ik gebruik ook Castrol maar de niet synthetische olie.
Ik denk dat de Big vanwege de leeftijd op reguliere olie 10W40 0f 15w40 beter draait.
Een ander punt is dat je de koppelingskabel controleert als die niet vast zit.
About oil - this is common misconception.
First 10 or 15 is only viscosity at air temperature, e.g. at warming up.
And second thing is - synth oil deteriorates slower than mineral.
There is legends that bikes with roller bearing cranckshaft "can break because rollers slip on synth oil" and that "it will leak because synthetic is slippery" - this is good for Mythbusters.
Synth oil is just better. I switched to 10W50 full synthetic bike oil (10W40 castrol on picture is semi-synthetic) that you can buy from Hein Gericke for 29.99 euro per 4 liter. This is in fact cheaper e.g. less additives oil by Motul made for Gericke. Last year my bike took 3+ liters of good Castrol 10W40 for 5500 km trip, part of which was German autobahn. This year it took a bit less than 2.5 liter of 10w50 for 6200 km. Engine have 100 000 km now, nothing changed except decompressor shaft oil seal and regular adjustments. Obviously viscosity of 10W50 at working temp. is more thatn 10W40

so may be this explanation, but also synth fades slower.
BTW - if you will be changing clutch plates - Vesrah is OK, EBC too, but Kyoto sucks big time.