I've changed my oil every 3k miles 3 times now with Amsoil Z-Rod 10-40.
The 62 just empirically runs better, smoother, quieter on this synthetic, but I got curious about the actual data on the oil.
I'll keep updating as I get lab results coming in. I'll follow Blackstone's advice and run my current oil for 4K, see what it looks like.
Hardly any breakdown of the Zinc however, still above 1300 after 3k miles. I have 287K miles on this 3FE.
The 62 just empirically runs better, smoother, quieter on this synthetic, but I got curious about the actual data on the oil.
I'll keep updating as I get lab results coming in. I'll follow Blackstone's advice and run my current oil for 4K, see what it looks like.
Hardly any breakdown of the Zinc however, still above 1300 after 3k miles. I have 287K miles on this 3FE.