just guessing here, but maybe he was pissed because you were slowing down shop flow over nothing?
unless Nissan explicitly states 370's require synthetic oil then the car doesn't require it, and in real world situations isn't benefiting from it
time is money, if he is the dispatcher (like myself) then he is under tremendous pressure to keep productivity maxed, 10 extra minutes to get this sorted may not seem like a big deal, but a 10 minute hiccup in a shop run at the limit can mean one or 2 other customers arent getting there cars on time
the other aspect is how the advisor sold the synth oil to the customer, we charge 30 bucks extra on synth oil changes, if you just did it without the customer consenting to the extra charge, thats a problem in itself
PS, everyone hates dispatchers, its our job to make sure all the work gets done on time first
and second is to try to make sure all you monkeys are equally upset with us at all times
my apprentice gets all the oil changes and accessories too, its called paying your dues