I have an 07' S2k that I track about 10 times between April-Oct. Assuming that I would change the oil every 2000 miles anyway, would one of those long duration (i.e. Mobil 1 Annual Protection's 20,000 miles) oils offer my engine better protection than the "standard" duration fully synthetic oil? Thanks

 

You're really going to want to have an oil analysis done to see how you're actually doing. Anything else is going to be speculation.

 

Agreed with Chibo -- let's rely on facts instead of conjecture: https://www.blackstone-labs.com/free-test-kits.php

Try both. Keep the mileage the same when you dump the oil. Report back with results.

 

A UOA isn't going to shed much light in this IMO. As someone who has a bunch of UOAs from track use, viscosity, duration of use, and most importantly the circumstances of the events themselves are a FAR bigger factor than a LL oil vs standard. These oils are so good these days, find one that makes you feel good and stick with it.

 

based on your assumption of changing the oil at 2,000 miles anyway, i would say that you would not see any additional benefit from using the extended drain interval oil.

for track protection, you're probably better off going with a higher viscosity oil.

 

If you want to go racing why not just buy racing oil. Before a track day do a racing oil change, track the car, then do a regular oil change afterwards.

Racing oil works well on track, not so well with daily drivers, ie you can't let racing oils sit for long periods, as they lack the detergents and anti oxidants conventional oils have. They have additives that stabilize the viscosity at high temperatures which makes them ideal if you're gonna put the engine through its paces.

 

Heat, heat, heat.