Originally Posted By: ltslimjim
Originally Posted By: buster
It's always been assumed the SS line is IV/V, but Amsoil no longer states what base oils they use.
Based on Noack volatility, I would lean towards thinking they are IV/V, but I would not be surprised if they are using some Grp III as well.
There ya go.
I'd say their OE is a mostly group III product, with XL and SS lineup(we all know thats the so called 2/3s poke lol) having PAO(more than, not sure if their OE has base PAO but who knows? lol) and probably esters in some fashion at least as part of the add pack.
honestly, I could really care less about splitting hairs. I like Amsoil products, I like a lot of different brands of products out there. It stinks things get all political and we all can't just like various products and leave advertisement talk to the uninformed.
Actually OE and XL have the exact same base oils. That's a given. The 2/3's comment would only be true if you neglect ALL Amsoil's other products.