The 1998 Volvo S70 non turbo I-5 is easy to work on..spark plugs, oil changes, transmission fluid changes, ignition coil, camshaft position sensor, crankshaft position sensor, throttle position sensor, thermostat, coolant temp sensor, upper radiator hose, coolant reservoir hoses, transmission torque mount, cap and rotor, spark plug wires..all doable by a DIY'er..I have done all these items..I had help doing heater core, heater hoses, alternator and starter and the dreaded PCV system..A bit more involved but not impossible for a good DIY'er on their own..