Depending on range of environmental temperatures, Nissan recommend between 10W-30 and 20W-50, i.e from cold climate (down to -20 degrees C) through to hottest climate (40+ degrees C and down to -10).
Hi mike i had already bought oil last week...the motor factor sold me motoquip 5w30 fully synthetic....can i use this in this engine without any ill effects or should i change it for recommended vicousity...by the way can you still get wiper arms for the 78 260's.