I have an 86 Chevy Blazer Siverrado. Its a 4WD and today I noticed a leak in the front axle on the right side. I thought it was brake fluid but after looking I could see it was the oil from the front axle. It looks like a rubber stop on the bottom is leaking. I put it in 4wd and it went in ok but I could hear a little clicking noise. So I took it out. It had a little trouble getting out of 4WD but it did unlock. It has never had this problem and I think it because the oil is low, but before I refill it I need to fix the leak. Couple of questions...... Is it okay to drive in 2WD? Would a Chiltons manual help me replace the seal? Has anyone else had this problem? Any other advice? Thanks for any help, as you could guess I'm a new newbie but a fast learner.