Got the old bird out the garage at the weekend, give her a wash, but noticed the day after, the front brake lever is not engaging sll the way out with the plunger, have to manually flick for brakes to unlock, I’ve checked the oil level, it’s half way up the site glass, looks a little dirty to be honest, question I’m asking is what oil does it use, I’m seeing dot3-4 And is it possible it could have got water in somehow? Was working fine when I got it out.