Originally Posted By: buster
http://sas-origin.onstreammedia.com/origin/lubrizol/EOACEA2009/RPTOOL2010Dep/rp/pc/index.html
Basically Amsoil is not paying to officially approve their top of the line oils, therefore you don't really know what you're getting. How would you really know if they were using multiple base oils to cut costs? You don't. You have to trust the company. Amsoil has been around a long time, like Redline. Both are two reputable boutique brands.
I trust 'em. Haven't seen 'epic fail' for TBN in an app w/ driving conditions to warrant extended drains. OTOH, there is definitely a lot of doubt regarding some newer model vehicles with OLM pushing beyond TBN depletion. That is a tangible issue compared to this discussion.
http://sas-origin.onstreammedia.com/origin/lubrizol/EOACEA2009/RPTOOL2010Dep/rp/pc/index.html
Basically Amsoil is not paying to officially approve their top of the line oils, therefore you don't really know what you're getting. How would you really know if they were using multiple base oils to cut costs? You don't. You have to trust the company. Amsoil has been around a long time, like Redline. Both are two reputable boutique brands.
I trust 'em. Haven't seen 'epic fail' for TBN in an app w/ driving conditions to warrant extended drains. OTOH, there is definitely a lot of doubt regarding some newer model vehicles with OLM pushing beyond TBN depletion. That is a tangible issue compared to this discussion.