Tesco's 99 octane
Discussion
golflion said:
Cheaper but any good? At 99 octane i would presume good enough?
Optimax is the one to have? But cheaper Tesco's maybe?????
Feed back please!!!!
Does 99 octane make any noticable difference to the average driver?, would you notice the difference? obviously its costs more?
I use the Tesco 99 octane all the time. I can`t notice any difference between that and optimax. Apparently optimax has cleaning aditives in it. So I just put a fuel cleaner in every few tanks, still works out cheaper than optimax! Mine is a fussy drinker though and doesn't like any form of 95 octane! 
So some fuel Buffs say, Optimax is the best quality due to the cleaning additives used and then BP Ultimate.
Regarding the Octane rating. On a normally aspirated car like the RV8, if it is tuned for 98 octane then going any higher isnt gonna make any real performance improvements.
Going down to 95 is very likely to reduce performance a bit.
(Turbo cars however are a different story since many of their ECU's can adapt to the better octane fuel and improve performance accordingly)
Personally i think in an age old engine like the RV8 so long as the 99 octane stuff at Tesco's makes your car run ok i cant see any harm. Petrol is astronomically priced and any saving is worth it.
I put BP Ultimate in last weekend on the way back from Santapod at Toddington and my eyes nearly popped out of my head for how expensive it was.
I think regular servicing & oil changes etc are far more important than the difference between optimax and 99 Ron Tesco.
Just my 5p worth.
cheers,
Nick
Regarding the Octane rating. On a normally aspirated car like the RV8, if it is tuned for 98 octane then going any higher isnt gonna make any real performance improvements.
Going down to 95 is very likely to reduce performance a bit.
(Turbo cars however are a different story since many of their ECU's can adapt to the better octane fuel and improve performance accordingly)
Personally i think in an age old engine like the RV8 so long as the 99 octane stuff at Tesco's makes your car run ok i cant see any harm. Petrol is astronomically priced and any saving is worth it.
I put BP Ultimate in last weekend on the way back from Santapod at Toddington and my eyes nearly popped out of my head for how expensive it was.
I think regular servicing & oil changes etc are far more important than the difference between optimax and 99 Ron Tesco.
Just my 5p worth.
cheers,
Nick
IS A VERY BAD THING
bga said:
I can't really tell the difference between Opti, Tesco's 99 or BP Ultimate. If the car even sniffs Texaco 97, it has a strop - more so that if fed with standard Unleaded.
I agree with the above although havn't used the Tesco stuff yet as it hasn't reached these parts.
Shell garages are rare here also but there is little difference between BP ultimate and Optimax IMHO.
I'm always curious about this subject, David Batty says don't waste your money on super unleaded, so I don't. It runs fine on ordinary unleaded. When I'm out for a thrash I've put super in, Sainsbury's or Optimax, I honestly can't tell the difference, it runs great all the time and has so much power who knows? I suppose a rolling road comparison would be interesting, anyone have any facts?
Fire99 said:
Regarding the Octane rating. On a normally aspirated car like the RV8, if it is tuned for 98 octane then going any higher isnt gonna make any real performance improvements.
Going down to 95 is very likely to reduce performance a bit.
(Turbo cars however are a different story since many of their ECU's can adapt to the better octane fuel and improve performance accordingly)
Nick
DOn't some cars have a "knock" sensor where they can advance the timing until they feel pinking.By doing this they can take advantage of the higher octane rating.? I'm fairly cerain my old 16v Sri had this. (non turbo)
>> Edited by esselte on Thursday 13th April 22:22
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