Engine Noise

[Gnasher]

So rather than picking holes in what i've found to be a perfectly good engine lubricant at a very good price for everyone, why not just accept it as being okay to use, even more so as it has been tried and tested for years by me? Believe me if i thought for one second there was anything wrong about it i would be the first to tell people to completely avoid it, but in this case it's the complete opposite. 

I'm not picking holes in anything fella, stating fact.  I've not said don't use it, the opposite.  As you've got the right to suggest particular oils, I and others have the right to suggest something else, you're being defensive for some reason and that's a matter for you.  The oil mentioned is in spec and it will be just, that's why it cost less and yes it will do the a perfectly acceptable job.  Higher quality oils will perform better, they don't generally discolour as fast, they drain out better and because they use better, extra and different additives they perform better, i.e. resist heat, carbonation, film and tear strength, etc etc. 

I think you said you use fully synth, if you use Westway fully synth 10w40 4T oil it's API SL rated and is the lowest (just) spec for that type of oil, I would recommend is SN, higher and later spec rating giving you better performance as outlined above.  That doesn't mean SL is bad, it's not, but SN performs better. 

If you want use a particular oil that's cheaper because you regard value for money, over performance, that's your choice.  It's the same with things like tyres, pads, chains etc etc, you buy to suit your budget and needs, as long as you happy, that's all that matters.