I've read at least some of the above thread... and I have to conclude, then, that the Supertech "Conventional" 5W-30 I bought at Walmart here in Canada, it being an "SP" oil, must be a non-PAO based synthetic blend, i.e. a Group 3 hydrocracked oil? Kindly see picture.
As I once experienced a rear main seal leak on a New Old Stock Moto Guzzi (factory fill, Agip Sint 2000 synthetic blend) when I proceeded to use Mobil1 full synthetic... well, I'm a wee bit gun-shy with synthetics and old machinery. (The Castol 10W-40 conventional motor oil "healed" the Guzzi almost right on the spot, well-nigh miraculously).
Running the Supertech in a 99 Camry L4 and a 99 Corolla.
Any and All: comments? Is that oil I bought half-ways ok?