Super Unleaded Petrol
Discussion
I've been using Shell V-Power since I bought my car, but I've just been to my local Shell garage to find the pump locked off, when I asked the girl at the counter she said the petrol station was closing, so there goes my source of V-Power.
Does anybody use any other type of Super Unleaded or should I travel out of my way to get V-Power?
Does anybody use any other type of Super Unleaded or should I travel out of my way to get V-Power?
VPower is 98 RON. Mind you, I've never used Tesco 99 RON as far as I can recall. VPower has always been my 'go to' fuel when I've driven cars that needed it.
You may find BP Ultimate suitable, as it's 97 RON. I had to use that when I drove my MR2 Turbo to Wetherby services, and I did find it a bit 'pingy' but then the MR2 Turbo was meant to take Japanese 100 RON fuel! I'm currently in the middle of an experiment with my Impreza GX, trying to measure if it's worth using VPower. So far, mpg and performance seems neck and and neck between standard and VPower so I might be on the cheap stuff permanently soon.
You may find BP Ultimate suitable, as it's 97 RON. I had to use that when I drove my MR2 Turbo to Wetherby services, and I did find it a bit 'pingy' but then the MR2 Turbo was meant to take Japanese 100 RON fuel! I'm currently in the middle of an experiment with my Impreza GX, trying to measure if it's worth using VPower. So far, mpg and performance seems neck and and neck between standard and VPower so I might be on the cheap stuff permanently soon.
markCSC said:
Baryonyx said:
VPower is 98 RON.
I think it is 99 RONvpower is 99
http://en.wikipedia.org/wiki/Shell_V-Power#V-Power...
Thanks for the tips guys, I'm buggered either way for Tesco or Shell fuel as they are now both as far away as each other.
It's not all bad though as I've found out the local garage is only closing for a couple of months as they refit it to have a Costa (lot) Coffee and Subway.
They are probably paying for it with the price they charged for V-Power!
It's not all bad though as I've found out the local garage is only closing for a couple of months as they refit it to have a Costa (lot) Coffee and Subway.
They are probably paying for it with the price they charged for V-Power!
dabiscuit said:
ScoobieWRX said:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
What he said and then some!!
Is that true? I use it because I get Nectar points. Are the super market super unleadeds good enough?What he said and then some!!
2) I always seem to get crap MPG when I use BP SUL
so I use it in emergencies only
dabiscuit said:
ScoobieWRX said:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
What he said and then some!!
Is that true? I use it because I get Nectar points. Are the super market super unleadeds good enough?What he said and then some!!
Tesco have been doing 99RON now for a long time and were always the first supermarket brand to have the best super unleaded. I used Tesco 99RON for a long time but these days because i mostly drive diesel and have a Shell garage less than a few hundred yards away i go there instead, but i used to travel several miles for Tesco 99RON when my scoob was still on the road because it was worth it.
Main Petrol companies like BP, Texaco, Total, etc... should be ashamed of themselves for selling the s
te superunleaded they do, and charging silly money at only 97RON octane levels from yesteryear, which is nothing less than a total pisstake, and that's why i never ever use them. These days there is no excuse not to use 99RON either shell or tesco if you drive a scoob or any other high performance N/A or FI car. There are plenty of forecourts up and down the country selling 99RON for you never to be too far away from one wherever you are.
Interesting.
I recently bought an Impreza P1. They can suffer from big-end failure and it is often speculated on forums that this is due to UK sub-100RON Super Unleaded.
I am not sure about this myself. I could understand low octane fuel causing piston failure, but big-ends?
Anyway, my local filling station is Esso, so my P1 mostly gets Esso Supreme 97RON. What is the opinion of Esso fuels in Subarus?
I recently bought an Impreza P1. They can suffer from big-end failure and it is often speculated on forums that this is due to UK sub-100RON Super Unleaded.
I am not sure about this myself. I could understand low octane fuel causing piston failure, but big-ends?
Anyway, my local filling station is Esso, so my P1 mostly gets Esso Supreme 97RON. What is the opinion of Esso fuels in Subarus?
Same as all the others, ESSO should be doing 99RON same as Tesco and Shell. 97RON is old hat!!
Knock/Det causes BigEnd failure the same as it can cause piston failure or both at the same time.
When you get detonation it puts a lot of stress on the bigends because the piston is in effect being knocked/pushed back down when it's on the upstroke.
Imagine your piston coming up and you're trying to knock it back down with a large hammer. Not only does that pit the top of the piston to the point where eventually you'll knock a hole in the piston, but each of those hammer blows is stressing and damaging those bigend bearings to the point of evetuall failure.
That's happening many thousand of times a minute.
Too much timing, runing to lean, low octane fuel, too much boost etc...Any or all of these issues can and will cause knock to the point of catastrophic failure.
Knock/Det causes BigEnd failure the same as it can cause piston failure or both at the same time.
When you get detonation it puts a lot of stress on the bigends because the piston is in effect being knocked/pushed back down when it's on the upstroke.
Imagine your piston coming up and you're trying to knock it back down with a large hammer. Not only does that pit the top of the piston to the point where eventually you'll knock a hole in the piston, but each of those hammer blows is stressing and damaging those bigend bearings to the point of evetuall failure.
That's happening many thousand of times a minute.
Too much timing, runing to lean, low octane fuel, too much boost etc...Any or all of these issues can and will cause knock to the point of catastrophic failure.
No longer agree. You just on the band wagon francis 
Main reason for bearing failure is oil change routine imho.
The p1 being the car it is fails more due to higher rpm and owners drive harder etc
Seen so many cars come in for mapping detting their heads off on standard map with mods and no issue, relucantly remap so no det and they continue without issue.
Agree it could cause piston damage and do so, but seen no evidence of bearing failure. Seems imho down to oil change routine and high speed runs causing high oil temp and therefore thin bearing film.
Simon
Main reason for bearing failure is oil change routine imho.
The p1 being the car it is fails more due to higher rpm and owners drive harder etc
Seen so many cars come in for mapping detting their heads off on standard map with mods and no issue, relucantly remap so no det and they continue without issue.
Agree it could cause piston damage and do so, but seen no evidence of bearing failure. Seems imho down to oil change routine and high speed runs causing high oil temp and therefore thin bearing film.
Simon
JollyGrnMonster said:
No longer agree. You just on the band wagon francis
Main reason for bearing failure is oil change routine imho.
The p1 being the car it is fails more due to higher rpm and owners drive harder etc
Seen so many cars come in for mapping detting their heads off on standard map with mods and no issue, relucantly remap so no det and they continue without issue.
Agree it could cause piston damage and do so, but seen no evidence of bearing failure. Seems imho down to oil change routine and high speed runs causing high oil temp and therefore thin bearing film.
Simon
Band wagon came and went Simon. Main reason for bearing failure is oil change routine imho.
The p1 being the car it is fails more due to higher rpm and owners drive harder etc
Seen so many cars come in for mapping detting their heads off on standard map with mods and no issue, relucantly remap so no det and they continue without issue.
Agree it could cause piston damage and do so, but seen no evidence of bearing failure. Seems imho down to oil change routine and high speed runs causing high oil temp and therefore thin bearing film.
Simon
And i've seen first hand plenty examples now of *remapped* newage cars, with less than 50K, with full service history and in-between oil changes all the way through, well looked after cars, but with properly buggered bottom ends. And this at between 4000-6000rpm. Not very high rpms in subaru terms and neither would you see very high oil temps at these rpms. A lot of them went quickly too. Pistons OK, end shells fubah!!
Driven hard yes but plenty of evidence from the ECU pulling lots of timing, high knock counts and some very low IAM's in some cases.
I totally agree hard use and sustained high oil temps will kill bearings but knock will do the same and quick smart if not kept in check!!
Even though dealership services and most home DIY oil changes go ahead without disconnecting the crank sensor to prime the oil pump and oil galleries before proper startup, i have to say I've not heard about too many scoobs going pop straight after a service. I'm not saying it doesn't happen but i can't remember too many instances of this happening.
It's fair to say the ECU will have pulled the majority if not all the timing it's going to pull way before big ends started knocking, up to the last point of det.
Thereafter i'm not sure knocking bearings are detected by the ECU are they?? Isn't the resonating frequency of noisy/knocking bearings way outside of 5Khz-6Khz the ECU picks up when det occurs on a Subaru?
It's fair to say the ECU will have pulled the majority if not all the timing it's going to pull way before big ends started knocking, up to the last point of det.
Thereafter i'm not sure knocking bearings are detected by the ECU are they?? Isn't the resonating frequency of noisy/knocking bearings way outside of 5Khz-6Khz the ECU picks up when det occurs on a Subaru?
Gassing Station | Subaru | Top of Page | What's New | My Stuff