Where would coolant leak into oil in 1998 Saturn SL2?
most likely a blown head gasket, cracked head, or bad intake gasket. with the s series. i would venture to say blown head gasket.
If a coolant leak were caused by brake work, I'd never have that person work on my brakes - ever. Just the brakes, I would think it highly unlikely that it would result in a coolant leak. If they were replacing the master cylinder, then I could see a possibility of someone inadvertently causing a coolant leak, but that would still even be a stretch.
No vehicle actually burns antifreeze. If the antifreeze level in your Saturn seems to be going down, it's because of a leak. Possible antifreeze leak locations are: Coolant hoses. Radiator cap. Water pump. Heater core. Head gasket. Cracked head or block. Find out where the leak is occurring and repair it.
In general, yes a coolant leak in a 2002 Bonneville can be fixed. The issue whether it is worth the money to fix the leak. If the coolant is leaking from an upper or lower coolant hose, the repair is simple and inexpensive. If the coolant leak is from the radiator, it will be a bit more difficult and/or expensive to repair. Moving up the scale, if the coolant leak is coming from a manifold…
Your 1989 Ford econoline has a coolant leak under the engine are there freeze plugs or something that would make it leak from there?
It could be from many areas such as the water pump, the radiator, radiator hoses, heater hoses, heater core, freeze plugs, intake manifold gaskets, etc. Take a good flash light and try to locate the source of the coolant leak. If you have no luck that way take it to your local garage and they can pressure test the coolant system to force the leak.