Darksteel165
Legendary member
This is correct.Unless they are sending the oil into a lab for oil analysis, there is no way to tell how much life was left in the oil.
Also not having oil is worse then having "old" or "dirty" oil.
Make sure when you're doing 10k or higher oil changes that you are actually full on oil until you change it.
My 22's manual claims it's normal\expected to lose\burn 1 quart of oil every 2k miles for the first 50k miles (I don't consider that normal either...).
My cousin blew up his old Cadillac because he never changed the oil he went 25k miles without checking, changing, or adding any oil.
Thing that finally made it break was the the engine was running dry and 1 day he turned it on and it was all over, there was basically no oil in the oil pan from what I understood at the time.
Don't be like my cousin, feed your truck oil and make sure it's never thirsty!