What would you do?

[sparkplug]

As long as he's not running sand and water for oil he's fine.

 

[ridgerunner]

From what I've heard on this site and others, that I 6 300 engine will run on anything! Backspec shmackspec, run peanut butter and lard mixed with olive oil and call it a day!
That will fix that OCD problem as well. lol

 

[thebeast]

Just tell him to do whatever makes him sleep better at night.

 

[webfors]

Yep, whatever makes him happy, especially if you get some free oil