I've searched and it appears using Anti Freeze is typically a LIM gasket problem. Since I have 121,000 on my 2000 SSEi and can't find any leaks on the outside I'm assuming that I need to replace the LIM gasket and while I'm at it replace the valve cover gaskets.

Are there any other materials needed such as additional gaskets or typcial replacement items?

Hopefully, this is no more than a weekend job!!!

I've seen some great posts on the how to'* for this job.

My list of materials so far is:
LIM gasket
SC gasket (I assume I need this one)
Valve Cover gasket
SC oil

Add a tube of Ultra Copper RTV for the head to block corners of the LIM. A tube of Pipe type sealant with PTFE for the LIM bolts to keep the oil/coolant from seeping up them. A throttle body gasket, can of TB cleaner (a clean TB is a happy throttle repsonse), a couple cans of brake cleaner for the surfaces where the gasket will sit.

When you say coolant is a sign of an LIM gasket. The coolant is disappearing?

You will also need new O rings for the coolant passage up to the supercharger. It takes about 4 hours to do this job. Get a inch pound torque wrench as well.

Dan do you mean the yellow o-rings that come in the FelPro box with the supercharger gasket or the coolant elbow o-rings?

Bill, thanks for the feedback.

Yes coolant is disapearing. Oil looks good so it isn't going there....

I

Dan, thanks, I do have a torque wrench. I did look at the coolant elbow and didn't see any leakage but it probably is a good idea to replace them. I may also get some new vacum line material.

Yes, the O rings that go with the supercharger gasket. Didn't realize those came with that gasket.

Make sure you get the aluminum LIM gaskets. Those last a lot longer.

You have a good point. If you buy the SC gasket at the dealer..the o-rings are seperate. If you buy the Felpro gasket, they are included.

For the price of a new set of elbows, it'* well worth replacing them. New vacuum lines is also a good idea, they get brittle with age.

Wrapped up the LIM gasket replacement today. This was a 12 hour job for me and would have completed on the weekend except I didn't have the right TB gasket.

The only problem I have is that the connector that connects to the fuel injector has a little wire clip that holds the connector on and the clip flew off. I don't suppose anyone knows where I can get that wire clip? It stays on right now but I would like to have a more positive hold on it.

The other issue that slowed me down was the vacuum lines were brittle and the t connectors broke. Trying to find the right combination of t-connectors and vacuum line sizes was a bit of a pain and the local part shops were of mixed help. It would have been nice if I could have bought a kit but the only one I saw was on ebay for $84... I finally ended up with a combination of 1/8" T, 1/8" to 3/16th" and a universal T that gave me 1/4" to 1/8"