i have a 91 cherokee w/ 4.0 i have noticed when i check the oil there seems to be what i feel is an excessive amount of moisture on the dip stick the oil it self dont appear to have any moisture. i check the oil often as it does have a leak some where. this moisture is actually making the dip stick rust near the top. i have a ton of things to fix just wondering if this is a major issue it is getting kinda close for an oil change Danno