I have now done a "burn" test on some Vaseline and i had a real problem in getting it to light!!!!!!!
I put about half a tea spoonful (a very large dollop) on the bottom of an upturned baked bean can , first of all i tried lighting it with the spark generator on the blow torch and nothing, then tried lighting it with a match, again nothing, then i tried lighting it with the blow torch flame, still nothing at all. it would not light at all
I then heated the liquid Vaseline with the blowtorch flame and it would still not catch alight, even though it was generating a lot of smoke. it did catch alight in the end with a very poor small flame, which was as easy to blow out as the candles on a birthday cake.
I am satisfied that Vaseline is NOT HIGHLY INFLAMMABLE and as far as i am concerned will continue to ues it for battery terminals and of course all of the other uses it was intended for
Thank all of you for your help and advice and i shall be writing to the "numpty" who had his letter in Enjoying MG.