Alan de Enfield

No - No fan.

The only electrickery goes to the valve just above the floor where the gas pipe enters the kitchen

. I am surprised you say that mains is required for a gas valve for the oven, .............

We have an LPG cooker (and rings) at home, this has a 220v controlled gas valve.

You cannot get a gas flow without the power switched on, and, there is a red 'escape button' by the door, so, if there is a problem you can hit the button on the way out and it cuts off the electricity and hence the gas supply.

Poblem is that when we have a power cut we dont have any gas either !!!

Sounds similar to that mentioned above.

Daniel backing up again I would say

Thats always a potential problem with a pumpout !!!

I was told BW paid business rates which covered our Council tax as we paid this as part of our licence fee. I assume the same still applies.

Whoever told you was wrong !!

Business Rates cover any part of the business - buildings, sheds,workshops, wharfs etc etc - but specifically excludes any part that is residential.

That residential dwelling must be assesed and pay council tax.

An analogy would be - I own a shop, part of upstairs is used for storage and part as a 'flat'. It is all owned by the 'business' and I 'run' the shop as well as own it.

I have to pay business rates on the shop and storage area, & I have to pay council tax on the 'flat'

Depending on how 'old' it is gives variable performance - after about 3 months its octane rating starts to go down, this should'nt give any great problems in running but will make starting harder.

Re the question - yes you can use it in a 4-stroke engine but it will give a smokey exhaust, and depending on what the mix ratio was could lead to oiling up of the plug.

Suggest that you put in (say) 5 litres of new (non-mixed) petrol and then 1 litre of the old (mixed) petrol, this will have the effect of 'watering down' the oil and will improve the starting compared to using old petrol only