There's been mention of it before here:
https://bobistheoilguy.com/forums/threads/gear-oil-mixed-in-with-diesel-engine-oil.255541/
And a few other places:
http://rawze.com/forums/showthread.php?tid=587
https://rawze.com/forums/showthread.php?tid=2063
Seems silly to me, but I'm not a trucker.
https://bobistheoilguy.com/forums/threads/gear-oil-mixed-in-with-diesel-engine-oil.255541/
And a few other places:
http://rawze.com/forums/showthread.php?tid=587
https://rawze.com/forums/showthread.php?tid=2063
Seems silly to me, but I'm not a trucker.