It is funny you posted this. 3 weeks ago we went "up north" here in Michigan for the 1st of the bi-annual men's weekend trail ride. We explored a new trail that we've been eyeballing for a few years. Springtime with and good snowfall this winter had water levels in MI pretty high. A beaver had built a dam right next to the trail and the water was over the trail with a slight current trickling over the dam. It was deep. We are talking over the waist deep. Being troopers, I said we are not turning back. No way around, only one way through. Pin it to win it, right? Wrong. The only 2 bikes that made it through without drinking water was my old 00' RM250 and a 1991 DR250. It was a sight to see. Everyone went over the seat for a short distance and 7 of the 9 bikes died. After 20-30 kicks all the bikes came to life and the ride went on (with 5 more mudhole crossings that would give pro GNCC guys trouble). If you've never smelled some backwoods black MI mud, you're lucky. It stinks bad!!
Anyway the jist of the story was everyone (except for the RM and DR)pulled in some water. After changing the oil and filter, it was fine. The tranny oil (or what was left of it) looked like a vanilla milkshake. Not good, but minimal damage done if the oil is changed immediately.
Water is not a good thing to get inside of your engine/trans. Just make sure if you have to cross water that submerses the engine (especially if the bike stalls and sits without moving in the water) change the oil ASAP. Remember as good as it looks, it is not a real vanilla milkshake!!
