Hello Ray,
I does seem that the circumstances have conspired and resulted in the exchanges we have had recently, May I assure you it not a personal quest of mine to contradict you on everything. Clearly we have different views on some subjects and it important that we can openly put our points for consideration by others.
I am driven by caution, because I have seen the results of ill advised tampering.
You make a very valid point that no one knows everything, and being able to coach others to a greater understanding was also an important part of my work. However in my view, the situation on the forum is rather different: Where as in the work place, you knew the person and more importantly the level of skill they already possessed, you gauged the level of new information so that it was not beyond their skill but perhaps stretched them a bit. Here of the forum we have no knowledge of a questioners ability, but it is possible to spot a probable novice by the type of question they ask.
The other significant difference is that in the workplace, if you were coaching a colleague, you were there on hand and could prevent major problems often before they went too far. It is often said that we learn by our mistakes, but if a mistake can not be recognised because it is unsupervised, then it may a fatal mistake.
For these reasons, if what seems to be naive question about a fuel related subject is posted, I will recommend the questioner seeks professional advice. Equally if I see what I know to be unsafe advise being offered I will bring attention to it.