Well looking at the way the price of petrol is rising lately I've gotta say it's the shell drivers club points or the tesco club card points!!!MRC recommend momentum and say they get better results on it. But whatever is easiest and most readily available is what usually swings people 1 way or the other
I mapped a car that I was told had 98 shell, nope, 95, result -13 degrees ignition pull. The owner never believed it until he filled ran it and it knocked out 365 bhp, now he's a believer!Always used T99 mostly with a slurp of Shell now and then. I'd be interested to hear if it gets any performance gains as it costs substantially more than the 95 Ron stuff!
TX.
Agreed with @scotty76Depends on whether the car is meant to have it. My current S4, 95 RON...
A fuel question.
My B7 2.0T FSI, 98 RON...
A fuel question.
I had similar with someone unsing BP ultimate. Was getting 5+ ****** which disappeared once momentum was used.I mapped a car that I was told had 98 shell, nope, 95, result -13 degrees ignition pull. The owner never believed it until he filled ran it and it knocked out 365 bhp, now he's a believer!
I knew a guy a couple of years back who worked in the Shell fuel labs (something to do with verifying F1 fuel since it had to be from a regular pump... never knew that!) and he told me some interesting facts about "supermarket fuel"
Without going into the vastly complicated cracking process no all fuel is created equal. Obviously the fuel companies keep the top quality stuff for themselves, the supermarkets take the slightly lower stuff and apparently Morrisons always take the junk that no one else wants haha
The likes of BP Ultimate and VPower are mixed as part of the process, then loaded onto a tanker
Supermarket fuel - in particular Tesco 99 - is added after and by the tanker, so there's a chance of inconstancy there and it relies on the tanker sloshing about on the road to mix it.
When they tested samples of fuel some of Tesco 99 made well under that figure... so if you're running a high performance car it's really not worth the risk.
Also as an added bonus Shell VPower diesel has a freezing point about 8 degrees lower than regular Diesel, so during that -11 super freeze Scotland had a few years back my cars were both starting fine when the neighbors were spending upwards of 20 mins trying to get their Tesco powered cars started. The fuel wasn't frozen, but when diesel gets cold it gets thicker. Strange but handy to know!
Another thing that test didn;t take into account - the car will "learn" what fuel it is using, so should get better the more tanks you put through it
It says on my S4 2010 filler cap premium 95 Ron? But our premium is 99 isn't it? I have been running it on v power since I got it but if I start putting standard shell unleaded in it will it make a difference or theoretically would it run worse than v-power or could it actually run better on the normal stuff? I thought an S4 engine would be equips for the higher octane?I try and run my S6 on Vpower constantly now wheres the B7 S4 I used to alternate between regular and Vpower depending on price
Right it says in my manual/filler cap that engine should run on premium (95 Ron) is recommended but if not available then regular petrol at 91 Ron can be used but is not advised and can cause slight loss of power. So our premium is above 95 Ron in England and standard is 95 Ron so will it benefit me at all using V power? Is it telling me that premium should be used or that any petrol that is 95 Ron is the recommended? And would there be any advantages to using V-power? What I'm trying to say is that will my engine run any better on V power or am I wasting my money or does it actually run better on the normal stuff or exactly the same? V power wouldn't make my engine run worse? ThanksMy S6 has both 95 and 98 on the filler cap. Which it will happily run both with a 10-12bhp difference in performance between the two according to my handbook. which in gross terms is barely noticeable if at all. and V power is 99. The engine is still young really in mileage terms which is why Im on ly using v power atm.
Your S4 will take both quite happily too with perhaps the same difference in power if any. Personally id run an S/RS on V power most of the time and use 95 if you have to. I don't think youd notice much difference but obv V power has all the engine cleaning stuff in alongside abit better performance, or so they claim lol
Right it says in my manual/filler cap that engine should run on premium (95 Ron) is recommended but if not available then regular petrol at 91 Ron can be used but is not advised and can cause slight loss of power. So our premium is above 95 Ron in England and standard is 95 Ron so will it benefit me at all using V power? Is it telling me that premium should be used or that any petrol that is 95 Ron is the recommended? And would there be any advantages to using V-power? What I'm trying to say is that will my engine run any better on V power or am I wasting my money or does it actually run better on the normal stuff or exactly the same? V power wouldn't make my engine run worse? Thanks
Thanks mate, wouldn't put tesco in it anyway but it's meant to be 99 Ron and a lot of people rave about it. I don't think anyone understands the point I'm trying to make other than you. I would class a 2.0 litre 200bhp a normal engine and was thinking that maybe being an S 3.0 litre supercharged tfsi 330bhp engine that it would benefit from V-Power. It's obviously just a normal standard engine by all accounts. Maybe next week when it goes in for its stage 1 remap at MRC to 440bhp I will be in the same league as the others and then can talk to them? Thanks for all your help.Im specifically talking about Shell fuels here. 95 Ron is standard unleaded with Shell, V power is 99. I have no idea what Tesco is as id never use that in an S4 or S6 or anything S/RS what so ever. As far is I can see there would be no disadvantage of using V Power at all, advantage wise is what it claims of being an engine cleaner and giving slightly more power overall. Basically don't put cheap Tesco **** in your S4!
I have run all my cars on V-power even my last A4 2.7tdi and got it to 84k miles with no problems. Just hoping the same for S4!!!3.0L TFSI S4 I would not class a normal engine! Normal is indeed like 1.6 - 2.0L bog standard non modified etc. I used to run my old A4 TFSI on normal grade unleaded. As soon as I went to the S4 I started using V power. Whilst im not actually an expert on fuels I just think these sorts of engines benefit from fuel that is known to be higher quality for clean/power reasons no matter how small a difference it makes, its a lot of difference in the long run for the engine.. You pay for what you get an all that.... theres a reason Morrison's is so cheap haha! The utter filth of low grade fuel that place.
Im specifically talking about Shell fuels here. 95 Ron is standard unleaded with Shell, V power is 99. I have no idea what Tesco is as id never use that in an S4 or S6 or anything S/RS what so ever. As far is I can see there would be no disadvantage of using V Power at all, advantage wise is what it claims of being an engine cleaner and giving slightly more power overall. Basically don't put cheap Tesco **** in your S4!
Must be a better man than you because when you google it a shell page comes up with this??? Or maybe I'm wrong and mistaken and sincerely apologise. Also tesco is mixed with ether or something similar to make it up to 99 Ron whereas shell v-power isn't or certainly didn't use to be.If you can find any txt anywhere that specifies vpower as 99 Ron your a better man than me! She'll don't give a ron rating for it, they just sell it as their "premium". Tesco momentum is the only fuel readily available that is guaranteed 99ron. It's completely different to your normal cheap supermarket rubbish so don't write it off just because it says tesco on it! MRC, possibly the best Audi tuner in the uk recommend it over vpower and if you go on their fb page you'll find examples of cars on their rolling road that were not achieving the desired results on vpower, they drained and filled with momentum and managed a fair power increase. My car is standard engine wise but I hope to be in MRC soon and I know which fuel it will be running come remap time!
Must be a better man than you because when you google it a shell page comes up with this??? Or maybe I'm wrong and mistaken and sincerely apologise. Also tesco is mixed with ether or something similar to make it up to 99 Ron whereas shell v-power isn't or certainly didn't use to be. View attachment 93048