oil disappearing!?

[n8thgr8]

So, Selling the RRC, I topped off all the fluids including oil which was a little low.
I sold the thing to a guy who flew up from Houston, and he texts me this morning saying he overheated yesterday, and he's stalled again today.
He said there was no oil on the dipstick.
So where is the oil going? Burning? There's a little leak, but I know it was full yesterday, and he says it's empty today. So a little drip leak wouldn't let 7 or so quarts to disappear. It would have to be pissing it out!
So what would have to be wrong to have that much oil be burned in less than 100 miles?

 

[Jimmy]

My initial reaction is "as is, where is" assuming you didn't extend a personal warranty to the buyer. That's just the jerk in me.

For the oil to not show on the stick, it would be down 2 quarts or so of oil, not 7 quarts. If there was zero oil, then the motor would have seized shortly after going dry.

The buyer is the one taking the risk of flying up and driving back a new-to-him vehicle. Did he have an independent inspection done of your RRC? I'm guessing not.

Who's to say the buyer wasn't paying attention to the temp gauge (assuming RRCs have them - never been in one myself), and instead of catching the problem early... allowed it to completely boil over and potentially do damage... damage which happened during his ownership. It's not your problem.

On a side note, was the initial timing bumped up on your RRC? I know many folks living in this area have the initial timing bumped up to 10 degrees initial. I know my 3.9 loves 10 versus the 6 the book calls for. It's a long shot in my mind, but wouldn't completely rule it out that the additional timing may be contributing to the overheating at lower elevations.

 

[carlosz]

collapsed rings due to continuos extreme heat perhaps, not quite overheating but prolonged running just below the red line.
having hydrolocked the engine will lead to collapsed rings as well.
improper oil viscosity,
blow by due to worn out rings.
some of the reasons which come to mind inmediately.