2001 max, stock, ran regular oil until 30K, switched to Mobil 1 , I am at 61K and went to Nissan and had asked for a Mobil 1 oil change, they put Regular oil in, anything I should be concerned about? Thanks!

 

I don't think so, just change back to MObil 1. The only thing you should be concerned about is going to that dealer again>>

 

quick question about ur mobil 1, which grade do u put I'm in NY and I dont no if I should put 10w 30 or 5w 30?? I was wonderin what someone else in my climate would put. I need to get an oil change in the next 500 miles coming up and I just got the car so I wanted to put Mobil 1 SupSyn. the car has about 90k now.

 

I suspect the climate where I am from is not a lot different than yours, probably less humidity in the summer time, but mild in the winter as I am at the coast. Use 5 -30 oil.

 

I would have insisted that they replace the wrong oil with what you ordered. Did they? If not (let me guess...) you need a new dealership.

 

5w30 over wider range of temperature. In NY you need 5w30 for the winter. all year round is find.