Offer him/her a free meal and a drink!
5-30wt is what is listed for my 2000 eldorado
10w30
Premium Unledded fuel.
Take the negative battery cable off for about 3 min.
Premium Unleaded 91 octane fuel.
about 2 hours
10w30 Your oil cap on the engine block will have it printed.
Go to your fuse box look at the diagram and take the fuse out
take the old ones out then put the new ones in im guessing
you must first remove muffler bearing
You have to take coil packs off and then they are easier to get to. You will see the wires going to the plugs.
if it is using trnasmission fluid you could have a bad tansmission modulator. take it to a shop