[shankar.balan]

Originally Posted by androdev

I
My current strategy is to fill up XP95 from a reliable outlet. If XP95 is not available, I'll stick to the regular RON91 and avoid any high-rev driving and it should be just fine..

I normally use only XP95 for my Cooper S (2012). It has worked well for me basis RobiMahanta’s good advice. Sometimes I also use XP100 as a special treat. But this is expensive.

Even when using XP95 I add a bottle of Octane Booster Juice. It might be over kill but having gone through the headaches of combustion misfire and injector cleaning and ignition coil faults in 2021, I am absolutely in no mood to take any chances whatsoever.

And in the occasional event of my having to use normal 91 Octane fuel I make absolutely sure that a bottle of one or other Fuel Octane Booster additive goes in with it.

Have you not ever considered the use of Proctane EVO or STP Power Booster additive for the Porsche?

[asmr]

Originally Posted by Venkatr

I've been a long term user of shell vPower (4+yrs)...
I'm going to start trying XP95 from now on for both my cars. XP100 is definitely an overkill for my vehicles , but for the drive experience it provides, it can be tried occasionally I think..

Originally Posted by androdev

I think with IOCL and BPCL outlets, adulteration has a huge role to play. XP95 is very good provided you get it from a trustworthy outlet. XP95 gives me close to 10 kmpl on a Porsche 911 (2012 model, NA engine) which is very impressive. I have also seen terrible performance with XP95 when filled from different outlets. This is the biggest challenge with IOC when compared to Shell, but unfortunately Shell doesn't sell higher RON fuel.

I was reading this thread yesterday again in search of references to octane boosters and I get 2 responses in a row in a matter of minutes! What are the chances of that! Can completely relate and echo the thoughts here.

I used Shell Vpower in my Taigun as the first fuel fill up (after getting it home from the showroom) and it was bad, for lack of a better word. But I am now willing to write it off since the engine hadn't run even 100kms by then.

I agree that XP95 gives significantly noticeable improvement in performance and a slight increase in mileage, but the issue I have is finding a reliable outlet. Even the outlet that I go regularly gave me bad fuel in the last fill up. Mileage was showing consistently lower on the MID.

XP100, Speed 97 give only a marginal improvement in mileage but smoother ride than normal or XP95 petrol. But they are significantly more costly and won't work out in the long run since availability is very limited. Even XP95 was not available in outlets near my home several times.

BPCL seems to have a lower chance of adulteration. And interestingly, standard fuel from BPCL from a popular outlet on Kodambakkam high road gave me much better performance & mileage compared to the same type of fuel from another popular outlet near the Airport.

So I am contemplating if I should simply go with octane boosters, but hesitant to take the risk for now, for various reasons.

Originally Posted by shankar.balan

Have you not ever considered the use of Proctane EVO or STP Power Booster additive for the Porsche?

I saw your post just after I posted my response, so I am adding the quote to the response itself, though your response was not addressed to me, Sir. Are the additives reliable, in both supply and quality? Would using them cause any problems in the short term or have you faced any? I read that Proctane EVO is better since it does not have the metal additives like STP does.

[androdev]

Originally Posted by shankar.balan

Have you not ever considered the use of Proctane EVO or STP Power Booster additive for the Porsche?

I purchased these OEM octane booster bottles but haven't really used them as I find XP95 availability to be pretty decent. I am sure my 2012 car has been run with ordinary petrol for all the initial years. During the recent service, Porsche A.S.S gave a thumbs up to the spark plugs health. My thumb rule is that if the mileage is great even when being driven aggressively and the engine runs cooler, the fuel is good to go. Soon after buying the car, I was using regular petrol till I made the switch to fancy fuels. There was no knocking even with regular petrol. The mileage was not good and cooling fans would run for a long time even after switching the car off. XP95 gives good mileage and the cooling fans, though come on, don't run for long.

[Sahil]

Originally Posted by shankar.balan

Have you not ever considered the use of Proctane EVO or STP Power Booster additive for the Porsche?

For my Porsche Macan, regular 91 octane with STP Octane Booster (bottle looks much bigger than the one in your pic) This combo works well even with my remaped tune.

[Er_Who]

Could be a noob question:

The compression ratio for the Toyota 1.5 L engine in my Hyryder (Hybrid) is 14:1. The recommended Octane value of petrol as per the user manual is 91 or higher. The compression ratio being so high, theoretically, using a higher octane petrol should help with the performance and efficiency of this engine right?

I've only used Shell (regular) petrol and IOC XP95 so far. Pondering if it's worth continuing with "premium" petrol or switch to a regular one.

[Jeroen]

Originally Posted by Er_Who

Could be a noob question:

The compression ratio for the Toyota 1.5 L engine in my Hyryder (Hybrid) is 14:1. The recommended Octane value of petrol as per the user manual is 91 or higher. The compression ratio being so high, theoretically, using a higher octane petrol should help with the performance and efficiency of this engine right?

I've only used Shell (regular) petrol and IOC XP95 so far. Pondering if it's worth continuing with "premium" petrol or switch to a regular one.

I believe your car has a a so called Atkinson Petrol engine. It has a different ratio for the compression versus the expansion stroke. The latter also being higher on an Atkinson engine. I don’t know for sure, but I suspect the 14:1 applies to the expansion ratio. Which means the compression ratio, the one that is relevant for the Octane number is smaller.

Use of higher octane than the standard/recommended tends to give different results on different engines. From none to marginal better. Although if some posts in this thread are to believed some people see phenomenal increases in performance.

Check your owners manual, see what it says. You can always just try it and see if you notice anything different. In the mean time I will ponder about the question on how octane number influences performance on an Atkinson petrol engine? In all honesty I don’t know.

As they are used on hybrid drivetrains, I wonder if it is possible to feel/measure any difference. The battery/e motor has to work a little less?

Jeroen

[androdev]

Originally Posted by Born 2 Be Wild

How i say this is because i sell fuel for a living

There is a lot of confusion around E20 blend and higher RON fuels in India. Do you have any insights into this? Do these higher RON fuels (XP95, Speed 97, XP 100, etc.) also come with E20 blend? Thanks in advance.

[Born 2 Be Wild]

Originally Posted by androdev

There is a lot of confusion around E20 blend and higher RON fuels in India. Do you have any insights into this? Do these higher RON fuels (XP95, Speed 97, XP 100, etc.) also come with E20 blend? Thanks in advance.

Sir it depends on availibity of ethanol at refinery level. There are times when retailers recieve unblended MS (motor spirit) and there are times when its blended. Mostly 80% of the supplies are blended. All MS supplies are blended if ethanol is there. Each company adds its own concoction of additives for their branded fuel to regular Blended MS. Each batch is tested for RON rating before being dispatched to dealer.

[shankar.balan]

Originally Posted by Born 2 Be Wild

Sir it depends on availibity of ethanol at refinery level. Each batch is tested for RON rating before being dispatched to dealer.

Sir.
My Mini Cooper S 2012 clearly says it can handle max E10. Ive been using IOCL XP95 plus STP or Proctane Octane Boost. Would you know if XP95 is an E10 fuel or less or more?

[Born 2 Be Wild]

Originally Posted by shankar.balan

Sir.
My Mini Cooper S 2012 clearly says it can handle max E10. Ive been using IOCL XP95 plus STP or Proctane Octane Boost. Would you know if XP95 is an E10 fuel or less or more?

Going forward all MS fuels will be E20 some have started getting it some will in the future. But its bound to happen. XP95 at present is 10% ethanol going forward its gonna be 20% in line with Govt Diktats.

[shankar.balan]

Originally Posted by Born 2 Be Wild

Going forward all MS fuels will be E20 some have started getting it some will in the future. But its bound to happen. XP95 at present is 10% ethanol going forward its gonna be 20% in line with Govt Diktats.

Sir
1. As we have seen in the other thread on the topic of Ethanol Impact on vehicle engines and the illustration provided where Reliance Jio BP is selling E20 from a clearly demarcated dispenser, will the Big 3 PSU Fuel Pumps and Shell Petrol and all, also have clearly demarcated E10 and E20 dispensers?
2. In the future once E20 becomes more widely available, will E10 continue to be sold alongside?
3. Considering the sheer number of vehicles in India which are not E20 Compatible, will they really be able to enforce an ‘E20 Only’ policy and completely stop E10?

[rkraghu]

I have been using on only XP95 in my Virtus 1.0 Highline MT since I bought it in August 2022. The car has done 10.5k kms till now. The performance has been phenomenal. The drive has always been peppy and the engine smooth. I have seen mileages upto 16kmpl (Display reading) in Bangalore ORR on low traffic days. I was surprised when I got a mileage of 19.5kmpl on my trip from Bangalore to Chennai via Chittoor. We were four adults and one child with 80% boot filled. I was driving at 90-110 kmph mostly in cruise mode.

On our recent trip to South Goa (Agonda) we got 17kmpl on XP95 with the car completely loaded. However, on our way back to bangalore, we had to make do with regular HP petrol as HP was the only bunk available within the car’s range at that time. I must say, XP95 really makes a difference. The car was perceptibly sluggish on regular petrol. The engine sound deteriorated too. We only got 14kmpl during our return journey!!

[true_sedan]

I’ve used 3 types of premium petrol on my Virtus GT:
1) XP95 - it’s smooth
2) Power99 - again smooth but with no perceived difference
3) Shell V Power - smooth and wife said it felt the smoothest from the passenger area.

I felt XP95 to be smooth. She felt shell V power to be smooth. So shell V power it is.

[shankar.balan]

Originally Posted by true_sedan

I felt XP95 to be smooth. She felt shell V power to be smooth. So shell V power it is.

XP95 is Octane 95 Fuel. This makes for a much better and more efficient burn rate.
Shell V Power is normal Octane 91 Fuel with extra additives and detergents.

The small price premium charged for XP95 literally represents far better bang for the buck than paying the significantly larger premium charged for V Power.

[vvrchandra]

Can XP95 used with Grand Vitara / Hyryder Strong hybrid variants. Will it be beneficial in terms of noise, mileage, etc. The attachment has details from manual.