In the past I have been kind of overzealous in my oil selection.  I would use what I perceived as the best oil available at the time, and some of it is expensive and only available by mail...or special order at the shops.  When I bought my Savage I was inclined to be a little less anal about the oil selection, as it is not a high performance engine.  I did what most of us Noobs do.....I bought Suzuki brand oil as recommended iin the owners manual.

Not long after doing that, I started reading the oil posts on this thread and became educated.  Unlike a lot of forums that post opinons without supporting data, this forum provided information about the content of the old and current oils....and showed what is happening to oils as the EPA started to mandate what is in "rated" oils.  I dumped the Suzuki oil pretty quickly and used the rest of it in my lawn mower.  I made the switch to Rotella T, as the supporting data on this site showed that it was a good oil and had enough ZDDP to keep our old school valve train properly lubricated.  I had been reading for years that Kawasaki KLR people swear by Rotella - but until this forum I had never found the data that showed why it was better than proper "motorcycle" oils.

I still mail order my synthetic 2T oil for my chainsaws and the synthetic 4T oil for my trials bike - but for the Savage I am using Rotella T and adding 1 oz of Redline ZDDP booster per quart.  Time will tell if this is the right thing to do.        

FWIW....

My Savage (see my signature block) uses the same Yuasa AGM battery as does my KLR650s.

At least as sealed batteries go, it uses a very common size.....