Unleaded vs Premium unleaded

[1991_Vn2nV]

In my opinion it doesnt cost more at all....you save money in the short term because of the increase in fuel economy. If standard is $1.30 then for 50L it will cost me $65. If BP Ultimate is $1.40 then it will cost $70. But for that extra $5 i would normally get an extra 50km out of a tank. My car does around 14L per 100km...so that 50km is worth 7L of petrol which would cost me $9.10 at the servo for standard unleaded.

Therefore I come out on top by $4.10 per 50L of petrol at the current prices when I use BP Ultimate instead of Standard Unleaded.

Then you have the long term gains as well because its better for your engine.

 

[big_c_43]

Is there any difference between BP Ultimate and Shell Optimax and other Petrol stations premium unleadeds?

 

[satos]

Is there any difference between BP Ultimate and Shell Optimax and other Petrol stations premium unleadeds?

Last year I worked in geelong and travelled there daily from melbourne.The trip was mainly freeway driving.I experimented with different grades of premium fuels
like optimax,bp ultimate mobil syn 8000.I found I got better mileage using bp ultimate.One trip I nearly got 900km out of a tank of bp ultimate.I list Bp ultimate first,mobil syn 8000 second and shell optimax third.

 

[vztrt]

Is there any difference between BP Ultimate and Shell Optimax and other Petrol stations premium unleadeds?

Problem with Optimax is that the octane level drops. Never had a good experience with optimax, but some people swear by it.

 

[Ripcell]

ive used premium in my vx, even driving it nicely for the whole talk i dont think it gave me an economy difference worth the 5-10cpl it did make a tiny little perforance diff but nothing worth bosting about.

is it true that optimax has some form of wax in it?

 

[trepaul]

the main difference is the higher octane rating, obviously. the higher the octane rating, the denser the fuel which contains more energy. also, fuel with a higher octane rating can handle compression better, which allows you to run a higher compression, and more power, without fuel detonation

 

[Stupa]

so then unless your using to to keep your engine clean a commy doesnt need any more then 92 with the compresion of 8 or 8.5, 10 or 11 though, likes high octain but still runs standard unleaded fine

 

[semi]

if he converted it to unleaded, then you shouldn't need additives.......

converting to unleaded usually only involves hardening the valves and/or valve seats. Trouble is, leaded fuel had a 97RON and normal unleaded has a 91RON. Leaded cars wont like using the unleaded fuel as much due to the fact theyre tuned to run on 97RON

 

[minux]

ive used premium in my vx, even driving it nicely for the whole talk i dont think it gave me an economy difference worth the 5-10cpl it did make a tiny little perforance diff but nothing worth bosting about.

is it true that optimax has some form of wax in it?

It's more likea gum, the fuel tend's to leave a lining, found this out after using it in my bike's and pulled one down, only thing i could put it down to was the optimax, changed fuel did anothe rpull down all was fine...was weird.

 

[Nobody Actually]

converting to unleaded usually only involves hardening the valves and/or valve seats. Trouble is, leaded fuel had a 97RON and normal unleaded has a 91RON. Leaded cars wont like using the unleaded fuel as much due to the fact theyre tuned to run on 97RON

fair enough semi, i wasn't aware there was such a big difference, thanks