And still it seems to be complete and utter BS. US Army is a more professional and have much higher quality demands than Pakistanis can even imagine, so if tank didn't failed US tests, why it should fail tests done by some 3rd world country, that did not even operated more advanced tanks than M48 back then. Especially that not even single independent and reliable source, or any document seems to proove claims from that silly TV documentary. Maybe because I read proffesional publications, and I also talk with people that served on M1 and not only on M1. Jim Warford for example, served on M1 and also wrote articles for ARMOR Magazine, he is also active user of TankNet forums, as well as DKTanker and George Newbill (worker in JSMC) both also users of TankNet. I also talked with a Pole that emigrated to US and was M1 tanker, he said to me that there are no reliability problems with the M1, and the only problem with engine is it's fuel comsumption. Besides this I hate television and pseudo documentaries made for/by it... they make people stupidier... books and documents are better and far more interesting.