oil problem

[Dragon877]

hi guys, this is kinda a n00b problem but i know you guys are always kind enough to help me

i got a 94 camry 2.2L I4 with 153000 miles on it, my last oil change all i know is the mechanic put in mobil 1 but i have no idea which mobil 1...im gonna add some oil to the car cause i plan to drive to philly on sunday...if i put mobil 1 high mileage 10W-30, will that mess up the car if that wasnt the type of oil the mechanic put in?

how badly will the oil affect the car if two different visocities were put in?

thanks for the help guys!

[uibalnme]

It will not affect the car in any way. 10W-30 is what the car requires anyway (at least mine does, It's a 96 LE with the 2.2L). Your mechanic most likely used 10W-30 too, so go ahead and top it off. No need to worry.