Petrol Volvo V70's of that era mainly called for an ACEA A2 or A3 10W40. Halfords Fully Synthetic 5W40 will more than meet these requirements and, being a 5W40 fully synthetic should give you greater protection.

We are not 100% sure which exact vehicle you have but our database shows that all Smart Roadsters built after 2003 could be lubricated with a 5W or 10W product meeting MB 229.1, 229.3 or 229.5.
As Halfords 5W40 Fully Synthetic is a 5W oil meeting MB 229.1 it should be suitable.

No, this would not be a good choice for your diesel powered vehicle. If your car is fitted with a diesel particulate filter (some but not all were) then you should use Halfords 5W30 VW/Audi Fully Synthetic 5W30 as this is a special product designed to protect this delicate filter in the exhaust stream. If no DPF is fitted then you could also use Halfords 5W/40 Fully Synthetic Diesel Oil. If in doubt you would not go wrong with the 5W30 VW/Audi Fully Synthetic Oil.
To answer your other question - yes fully synthetic oils are miscible with semi-synthetics and mineral oils but you tend to lose their increased benefits by mixing them.

The most suitable product from our range for your 2007 Ford Focus would be Halfords 5w30 Part Synthetic which meets all the appropriate manufacturer requirements for your vehicle.

If your VW Bora is running on a fixed service interval then Halfords 5w40 Fully Synthetic Oil would be suitable however if the vehicle is running on a variable service interval then you should use Halfords 5w30 VW/Audi Fully Synthetic instead. If you are in any doubt then the latter would be suitable in both cases as it is the higher performance grade.

Use our vehicle specific look up for details of which oil you require:
http://www.halfords.com/webapp/wcs/...
If your car is not listed, your local Halfords Superstore may be able to offer further help and advice.

Use our vehicle specific look up for details of which oil you require:
http://www.halfords.com/webapp/wcs/...
If your car is not listed, your local Halfords Superstore may be able to offer further help and advice.