Help choosing an 871 truck

[Nilao]

If I could not pop the valve cover off I would walk away. And to call that an invasive procedure is horse shi#t. It take 15 minutes to take off have a look and put it back on.

You want to get invasive tell him you also want the pan dropped, the egr cooler outlet disconnected and the system pressure tested to 20psi overnight. Jack up the rears and pull the axle shafts for a bearing inspection, pull the inspection plate off the flywheel housing for a clutch inspection and a dyno for blowby measurements. That’s a good start I’m buying a used truck. Any reputable dealer will allow you to take it to a shop of your choice for any inspections on your dime. If they won’t then walk away as they’re cheats and crooks.

As far as an oil sample I have seen shops use a new 1/8 inch nylon tube that they feed down the dipstick tube to pull a sample without draining the oil which has to be done taking it from the drain plug.