when to replace snowmobile shocks

Q I inherited a 1997 Polaris Sport Touring 2-up sled. It’s got 13,000 miles on it. After taking it on a nice long ride, I noticed the rear suspension was completely collapsed. The next day, while it was on the trailer someone noticed it had returned to near normal. We first thought the rear springs gave way, so I removed the track suspension. I found the rear shock had blown a seal. My question is, since I have the suspension out, should I go ahead and replace the springs and front shock too? I am familiar with the history on this sled and know that most of the miles are hard miles. – dano

A This is typical with older machines. The shocks have lost the charge and the oil that is contained inside has been replaced with condensation that will freeze the shocks. After they warm up from movement or ambient air, the springs can force them back open. The end result is all shocks need to be rebuilt (if possible) or replaced. – Jason Houle, Straightline Performance