Has anyone heard of/used, Archoil 9200 or 9100? I am told it is an additive, like 1oz per ltr of oil, adds a lot of protection for bearings and such. I use Red Line 10w60, has extra zddp, and Red Line products in my SMG and diff. I get a bit nervous about using extra stuff, most I believe is snake oil so to speak, but heard this stuff is different...any thoughts anyone?. About 8K miles or so ago I put in new rod bearings etc...just want to be careful
