Originally Posted by tommyble
My last thought on oil changing is what if I let them change the oil and filter, drive home drain the standard oil , leaving the new filter in then fill it with 5w-30 synthetic. Their change along with my short drive home then draining their oil would be like a "Rinse" make sense?
I would advise against doing that.
You would be mixing the 1qt of Crude oil in the Filter with the Syn. Oil
in doing so. THAT"S NOT A GOOD THING. The Rinse so to speak, you speak
of would ONLY be if you changed the Filter also.
Wait until all your free changes are complete, THEN switch to Syn. That
way your Break in period will also be about complete.
As far as seeing IF they do in fact Change it, get a Magic Marker and
put Date / Mileage on the bottom of the Filter, then check when you
get home. That will give you a good clue. Start with the Purchase Date
of the Jeep on your current Filter.