This is a good place to start.

depending on chassis number bolt part number 982757 covers to CH -92351 CH -170999 CH -47999, bolt part number 985022 covers from CH 92352- CH 48000- CH 171000- on for the bolt that secures the camshaft position sensor to the housing, and bolt part number 985133, and 996318 respectively cover the ho...

Some answers 1. C70 is a P1 car 5 cylinder turbo 2. Being a 12 year car, I would suggest the thermostat, even with the low mileage, and check or replace temp sensor 3. If the fan isn't coming on, then that could allow the coolant to expand enough to overfill the tank 4. The "octopus hose" ...