I have been using Castrol Magnatec in my Honda Civic 1995 Ex since 2002. I switched over to this oil to take advantage of its' advanced protection during the longish start ups experienced with CNG.
It is said that most of the cumulative engine wear occurs during the start up phase and the following few seconds. During this time, an ordinary engine oil is still in the oil pan (having drained there due to gravity) and critical engine parts run relatively "dry" as the oil pump is just starting to deliver oil at high pressure.
Magnatec overcomes this by sticking to metal parts thereby "holding the fort" till the engine has started and running steadily to drive the oil pump.
But that's not the only great thing about it. It's a top quality oil in many other respects. My personal experience has been very satisfactory. I still remember the first time I used this oil and how the engine seemed significantly quieter and smoother. My car has now done over 238,000 km and there is still no sign of oil consumption or loss of power. Recently I went to Nathiagali with a full load. Then a few days later made a day trip to my village on M1 (maintained 120 km/h most of the way). Still no problems.
I recommend Castrol Magnatec very highly. It's a shame Castrol hasn't done enough to market this lubricant properly in Pakistan. They don't even have a Pakistan specific website. Therefore, if you need to find more info, go to Castrol's UK webpage at Motor Oil and Lubricants Castrol UK - Castrol Magnatec
Hope this helps.