Best Fuel and Oil for J-Spec NA MKIV

Hi Guys n Gals.

Thank you for all your responses to my last post regarding technical manuals for the mkiv, but I have another couple of questions now.. sorry to be a pain .

I have read debates elsewhere regarding which is the best Fuel to use for J Spec Supras, Shell Optimax (V Power) or BP Ultimate, but there was no concrete answer.

I know they use 100 RON fuel in Japan which we don't get here, so what do you guys use in yours and why?

Also, I checked my Service report and found that this place I bought the Supra from used 10w/40 semi synthetic oil. Being a high performance car, I thought using something like Mobil 1's 0w/40 fully synthetic oil would have been better.

Is there a 'best' oil to use? If so, which? If not, then what 'weight' should I be using eg 0w/40, 5w/40, 10w/40 etc???

Oh, now that I have my Supra, I will try to get some pics up asap .

Thanks for your help gang

V power, or if you're tight fisted Tesco 99 RON

BP is not too good by some reports.

You have an NA so its not as critical as a TT, but still its pays to use a good fuel...... unless you like de-cokeing engines??

Oil wise, a 0W/40 will be too thin. Stick to 10W40. The engine needs high pressure and flow, and after a few years old they don't like thin oils as the clearances in the engine start to open up.

For race puprposes even a 10W/50 or 10W/60 would be recommended.

Regarding the 'best' oil to use.... search for what Oilman (Simon) recommends. They have a special on this weekend for club members and IIRC there are two recommended, one being Motul fully synth.

When buying synth oil remember you get whet you pay for...... non-branded synth oils are sh*t (i.e. Halfrauds own).

Na's will run fine on 95 Ron unleaded with no problems at all

Personally i wouldnt use normal unleaded. These engines are supposed to run on high octane fuel, Japan use 100 RON and im not digging at you ian R but i would what i use - Super unleaded which is 99 RON minimum just to be safe. Otherwise it could cause pinking or pre-detenation of the engine in later stages which is....very bad. My mate had a skyline and that happened to him all because he used 95 RON.

What i find is that the 99 RON has loads of mid range torque so i know that the fuel's working!

Oil wise, ive just had mine serviced and it had 10W/40 and she loves that. It all depends on how much you want to spend and what brand you want to go with in the long run really ice kul

Guys,

Your input in greatly appreciated.

I'm currently running on BP Ultimate but think I will give V Power a shot... and will def stick to getting a good brand of 10W/40 oil.

Thanks again

Most people find they get a little better mileage out of something like V-Power, which pretty much covers the additional cost. Factoring in the cleaning addatives, I don't see any real arguement for using anything else.