I couldn't pass it up for 2.50/gallon

>Local transport company
>"We don't need the (legit good) service deal on our new trailer, we'll change our own oil"
>Fills Biltema™ ShitboxOil™™
>Shit's ded after 150k kms.

I got all they had

Why not just change it at 100k?
Isn't the point of having a transport to have the manpower and storage to actually do stuff like changing oil themselves?