"Two tankers full of oil collided in the English Channel today." I have no quarrel with that two-word structure whatsoever, but it is basically referring to quite a different grammatical situation. Nor do I have any quibble about the strict 'correctness' of "Two tankerfuls of oil were delivered to our block of flats today."
What I said was that I didn't like the sound of the latter and thus had no qualms about using tankersful. In similar vein, imagine I tell an elderly relative I will visit later in the day and I subsequently knock on her door. From within I hear, "Who is it?" and reply, "It's me." Now, I know perfectly well that these words are 'incorrect', given that the verb to be does not involve accusative cases such as 'me', and that I should, therefore, have said, "It is I."
I don't CARE that "It's me" is 'wrong'; it's what I and about 99.999% of British people actually SAY.
I have a Master's degree in English and some decades of teaching it at various levels, including university. Accordingly, if I feel like "playing about" with any aspect of the subject, that's what I'll do and I don't really give a good goldarn for what anyone else on AnswerBank might have to say about it!
I prefer tankersful and tankers full is an irrelevance here. Simples!