Just bought an Alfa 156 (1.8 TS) - its my second Alfa as i was pleased with the first.
his is something I always do when I buy a new car with over 50,000 on the clock.
Bang a decent petrol injector cleaner . fuel system additivethrough it.
Get it serviced and put an engine additive. friction reducer in it.
Any advice on what the best ones are at the moment ??
and any advice on using them with this car ?
Many "assumptions" in the answers you got ... first of all 80% of the wear and tear takes place when you start your engine, during the first few seconds needed to feed the lubrication system perfectly.
First thing i would advise you is to get a compression test of your engine then see from there.
You will have the choice then to minimize the wear and tear with an anti-friction. It is true there are already anti-frictions in all engine oil but still you can wisely increase their effect with a few reliable products.
The first type of product i would recommend you is a lubrication system cleaner or oil flusher. Despite what it said above the lubrication system is essential, including in terms of pollution issues. Engine oils are the first product where quality matters, choose the right grade. But then why spending your money into a good oil to use it in a dirty engine.
Avoid the solvents breaking the oil coating while in use (flammable package mention), and also the hard chemicals damaging gaskets and O-rings. Dangerous products cover themselves with the mention "run at minimum idle". Non dangerous products allow you to drive with it and eventually to forget. Safe products do NOT modify lubricant viscosity ...
Injection cleaners are a second alternative ... but will not impact in terms of wear and tear. The main issue about all these products is the side effects ... which might leads to engine seizing sometimes or injectors failure.
My advice ... be carefull, nothing cheap is good and nothing good is cheap ... Avoid products without back ground and if they have one ... make sure they are still for sales in their markets of origin ... and avoid the TV shopping magic, they might sell well but will gone by the time you might face problems !