Originally Posted by swimmer
sorry, yes, 5-40.
I would suggest that 5W is, maybe, (I am speculating a bit here) too low for the cam chain tensioner to work properly when really cold. I wouldn't use any oil that's outside the recommended viscosity (10W-40) when a vital part needs oil pressure to work.
2002 black Tiger955i, 72000 miles and counting.
2011 black Tiger800XC, The other British Land Rover. 40000 miles and counting.
2013 black Tiger800XC, The other British Land Rover. 500 miles and counting.