E5 or E10 Fuel

[TonyHSD]

Tbh no additive can make E10 as good as E5 especially when we are talking about Ron 95 vs 99. I am into week 4 now of using only E10 (plus redex) and the engine has wired sound, it sounds similar to small displacement underpowered engines, where with previous 95 E5 or 99 E5 sounds much better and pulls stronger. 👍

[Trewithy]

I was at Sainsburys this morning and noticed a long queue for the petrol station.  I normally fill at Tesco and occasionally use their momentum 99.  I was wondering if anyone has used Sainsburys 97 octane (still E5 I presume) and can compare it against 95 octane.  I think the price difference over 95 octane is less than Tesco charge. 

[TonyHSD]

16 hours ago, Trewithy said:

I was at Sainsburys this morning and noticed a long queue for the petrol station.  I normally fill at Tesco and occasionally use their momentum 99.  I was wondering if anyone has used Sainsburys 97 octane (still E5 I presume) and can compare it against 95 octane.  I think the price difference over 95 octane is less than Tesco charge. 

That’s a good question 👍.
I have never tried Sainsbury’s 99 E5 but their 95 E5 and now E10 has always been the poorest quality petrol that I ever had along with Morrisons fuels, the car simply feels sluggish and engine is noisier with all of those. 

[Cyker]

AFAIK Sainsburys' super unleaded is just higher octane but doesn't do anything else different to their normal fuel, so in theory should only make a difference to cars with high compression or turbo chargers.

It's not like the fancy fuels (e.g. V-Power, Ultimat, Momentum etc.) which add more cleaning additives and stuff... (Allegedly!)

 

[Spo2]

Result for first E5 (Momentum) 53.45 mpg. On E10 it was 49.16 mpg. Not sure the increase is due to warm weather or due to the  E5 petrol. Refilled again with E5.

[Roy124]

Well my E10 has improved from 57 to 64 that must be weather. 

[TonyHSD]

Weather, my mpg is improving by the day but yesterday I had to stop for refuelling at Sainsbury’s and immediately felt the poor fuel from there. Wanted to try their premium but they don’t offer at all pumps and so I went for 95 E10, what a mistake. When I push the car to accelerate nothing happens like in 1.1 escort mk3, just noise and vibrations., BP 95 E10 from my local M&S garage as good as 99 E5 from Tesco. 👍

[Chrisg99]

On 3/22/2022 at 9:23 PM, Roger F said:

I wondered what fuel everybody was using. I filled up with E5 in error and noticed a good improvement on mpg. So, I have carried on using E5, especially reading all the horror stories about the E10 fuel. The only downside is the price made worse by the present fuel situation. 

In the Corolla I went to using E10 and found no real downside including the MPG did not vary significantly. Comparing the price of E10 and E5 (super) now still believe E10 will have no drop. The two cheap cars I have had since ordering my new C-HR and selling the Corolla have been diesels, so a bit out of the loop with all the price hikes.