Lately we've had a lot of rain in my area and while I was out yesterday with a friend I attempted to cross a creek on a dirt road. I know the road well as I grew up on it, but it was a little too deep so I backed out. I could hear my exhaust under water so I know it was at least that high. Then I realized my rear diff breather was also under water. It lasted less than a minute, but now I'm worried about it. Should I be?