I don’t trust the previous owner of the bike.
Just before the handover, he had agreed to replace the bike battery (it died while viewing) and perform a once-off engine oil change. I specifically asked if he used a fully-synthetic oil – and he said YES; though he couldn’t recall the oil name (red flag!). So he arranged for tow and got the agreed stuff replaced.
Firstly, Mobil Super 4T is a mineral oil – not synthetic. Next, the manual calls for 10W30 viscosity on the CB400X / Continue reading “My poor, poor CB400X…”