Replacing an oil pan gasket on a 1998 Saturn SL2 is best done by a trained mechanic. It can be tricky to remove the oil pan gasket in order to install a new one, even though the item itself is readily available at most auto supply retailers.
Having a head gasket replaced on a 2000 Amigo can be replaced but it can be hard depending on if the mechanic has the right instructions. Also, depending on the condition of the head gasket can depend on how hard it is replace the gasket.
how to replace rear struts on a 2002 saturn L 300
It's not hard but time consuming.
replace head, head gasket, and head bolts.
very very hard
To replace a thermostat on 1998 Silhouette, locate it under the top hose assembly inside the radiator. It is fairly easy to replace with the right tools.
um that is hard to say
It is not hard, certainly no more than any large gasket. I have most success by 'gasket gooing' the gasket to pan, then holding pan up and inserting all bolts 2-3 turns first, then start doing up finger tight opposite sides, finally with wrench, still opposite sides.
how hard is it to replace a water pump on a 1998 chevy venture van?
Yes, it is a very involved project on a car with very little room under the hood.
Time to replace the engine. Also, need to replace all of the hoses as they are now contaminated and will start to swell. The cause of the oil leaking into the coolant is either a cracked head or a blown head gasket. Unfortunately, it is hard to tell without disassembling the engine for inspection. You can get Saturn engines fairly cheap at wrecking yards but beware that the oil contamination is a common problem with these engines.
Replacing ERG Valves in a 1998 Mercury Mystique is fairly hard because it requires great precision to avoid blocking the EGR passage.