Hey Guys I have a ML320 98 only like 62,000 miles on it lately I have been hearing a lot cracking noises from the engine and the motor oil light goes on and off. What can i do about it? I also have been noticing transmission slipage and a lot choking wen it automatically switch gears.
Squeaking nosie from the rear?

HELP

Sounds like you could have several possible things.

When you say, "cracking noises from the engine" it makes me think of the catalytic converters. As for the CEL, you need to get the read out and see what it says.

Early model years seem to have a higher rate of transmission failure. I had a very easy 30,000 miles on my ML when the transmission had to be rebuilt.

It seems like the first thing you need to do is see a technician and get their assessment. Once you have a good idea about the problems, then try the search feature. Sometimes there are some inexpensive things to try, somtimes you just have to bite the bullet and pay for expensive repairs.