...Unless he switches to Mobil 1 synthetic. It will reduce friction and you won't have to change your oil so often.
But, at 120k miles, I have personally seen Mobil 1 cause older engines to start leaking oil.
"Liberty without morality is simply slavery to self." Me
"I don't think that counts as either unnecessary or inhumane killing. And the bonus of bacon falling from the sky can't be overlooked." jtmac, on killing feral hogs with tannerite.