Mobil Super HM and Super 2000 HM are the two exact same oils. So, I wouldn't say its metric oil at all. Even the bottles and labels are the same colour.
It is quite possible for MSHM to have the double seal. I had some Vanilla M1 in quart bottles and it had the double seal. Had Mobil ATF +4 in 1L and 5L and it's double sealed.
I wouldn't really say the bottles get hot at all, since I didn't see anything else with leaky sight gauges.
Both of these straight from the PDS.
Originally Posted By: Mobil USA
Mobil Super High Mileage uses a combination of synthetic and conventional high quality base oils combined with modern performance additives to help provide long engine life and outstanding protection for vehicles with more than 75,000 miles. Formulated with seal conditioner, Mobil Super High Mileage helps prevent leaks and reduce oil consumption.
Originally Posted By: Mobil Canada
Mobil Super™ 2000 uses a combination of synthetic and conventional high quality base oils combined with modern performance additives to help provide long engine life and outstanding protection for vehicles with more than 120,000 kilometres. Formulated with seal conditioner,
Mobil Super 2000 helps prevent leaks and reduce oil consumption.