Mashaba running away

I have used liquid moly 10w60 oil in my Pajero 3.2 for a few years then thought I should just ask LM what oil do they recommend. A Thembani Mashaba recommended their mineral oil after flushing the engine with their engine flush. I did as recommended. After the very first start up - plenty smoke and a clapping noise in the engine. Contacted Mashaba which then said add a tin or two LM additive I 'have now ********** the band aid'. When I confronted him he just, as expected, pulls up his shoulders and said if the oil was the problem LM would have had 2000 engine fails a month. I have had the same issue with a petrol V6 Land Cruiser with the same 'it's not our problem' attitude. But they state 'Our liability is only active when the oil guide is followed...' I did follow what he recommended and now? Typical large corporate attitude - they want you to buy and use their product but will NEVER take responsibility for failures. I have my doubts about this Mashaba 'engineer's qualifications and if he even knows what he is talking about or is he blindingly following an oil guide and now hides behind that when the **** hits the fan? I have changed to another brand now, and will for ever tell people of his attitude and discourage them from buying Liquid Moly. I will, however, submit a claim thru my lawyers after oil tests etc.