Unleaded

bigtim · #1 12-01-2007, 01:52

as long as it is 97ron or above

umpkin · #2 12-01-2007, 06:39

originally nissan said that the S12 can only run on leaded 4 star, ive had my S12 now for 8 years, always run it on unleaded. it wont damage the engine as the valve seats have the inserts same as used in unleaded heads, the only other thing that can cause a prob is the timing, some say you need to reatrd it slightly. i think 2 degrees was the amount, but unsure on this.

most people use tesco 99ron super

adzs12 · #3 12-01-2007, 10:28

It even says unleaded on the inside of the petrol flap

Ronin · #4 12-01-2007, 12:52

Say's use 97ron unleaded on my petrol flap.

adzs12 · #5 12-01-2007, 14:46

i use shell optimax, or what is now known as v-power.

Paulpen · #6 12-01-2007, 16:18

Posting when drunk = no no lol but you know what I meant

Cheers chaps was getting all worried then !

So is it best to run with it retard a few degrees ?

adzs12 · #7 12-01-2007, 17:10

Quote:

Originally Posted by Paulpen

So is it best to run with it retard a few degrees ?

Just make sure theres a retard in the seat and you shouldnt have any problems

wacomuk · #8 12-01-2007, 22:15

Quote:

Originally Posted by Paulpen

So is it best to run with it retard a few degrees ?

i wouldnt bother retarding the timing it will lower performance + generate more heat, the standard timing is 15deg + or - 1 deg. i used to run 17.5deg as it gave better off boost performance but i never use less than 97ron fuel