What about you Hippo, you seem to have a good handle on this, what do you use?HIPPO said:
In my opininon you use any of these oils for extra protection, not to extend drain intervals.
Here is Mobil 1's reasoning:
What about Mobil 1 V-Twin oil? How is that different from Mobil 1 for passenger cars?
Mobil 1 V-Twin oil is designed for air-cooled, large-displacement bikes. Because of their design, these engines can generate very high localized oil temperatures and high overall bulk-oil temperatures.
As you know, a typical air-cooled V-twin's rear cylinder gets a lot hotter than the front cylinder – it's a matter of airflow. When it's hot out and you're stuck in traffic, the oil temperature in your bike climbs rapidly. Above about 250° F, conventional motor oil is going to break down. Mobil 1 V-Twin synthetic oil is good to above 300° F.
In addition, Mobil 1 V-Twin 20W-50 is a higher-viscosity grade than Mobil 1 15W-50 for passenger cars. And Mobil 1 V-Twin has no viscosity index improvers, so the oil is very "shear stable." Simply put, Mobil 1 V-Twin synthetic oil won't break down as readily as conventional oil.
Like Mobil 1 MX4T, Mobil 1 V-Twin has high levels of phosphorus/zinc and the same high-temperature detergent technology for superior wear protection and engine cleanliness, even at elevated oil temperatures.
With Mobil 1 V-Twin oil, you can go the full length of the manufacturer's recommended oil change intervals with ease.