There is very little distance between the oils these days. Syns are better for extreme cold and a bit better at extreme heat. Are you going to run at the extremes?
Originally Posted By: Nissan101
Would you all use valvoline maxlife synthetic blend in a performance engine or would you all recommend i use a fully synthetic oil
Valvoline makes MaxLife in a full synthetic version too
If this is for your S13 Maxlife 20w50 should do well, but if you have a performance engine, Valvoline has their VR1 20W50 which is great, and it is aimed at performsnce engines.