High Octane Fuel Maxol E5 Real?

Squall19

Anyone know if the Maxol E5 is proper octane 98+ fuel?

If not where can you get it in limerick county.

Matt Simis wrote: »

All the proper Euro's are designed around 98RON, use less and you dont get the quoted paper performance spec.. Oddly (hardly par for the course especially when talking about Turbo'd Jap stuff), the test below shows a Jap import that didnt even achieve its quoted BHP with any fuel including E5 while a German Domestic car gained impressively over the paper spec.

Stolen from http://www.bmw-driver.net/Forum/showthread.php?t=7204

Came across this very informative article done by Thorney Motorsport in the UK (BMW & Vauxhall specialists) on their Dyno Dynamics rolling road:
http://www.thorneymotorsport.co.uk/tuning/Fuel_Test_Results.shtml

Read the pdf version (at the top of the article after you click the link) to see the dyno sheets as the ones in the link are too small.

Note, Shell Optimax has been replaced by Shell V-Power in the UK, which is not the same as the Shell V-Power in Ireland (which is 95RON)

Method of testing (this was not some claim by a glorified internet warrior of testing various grades of fuel in the period of 1 day - Thorney Motorsport spends over 300,000 pounds a year on testing various items):
- each car was run for 3 full tanks of regular 95RON using different fuel stations and filling up at different times of the day
- car was then tested on the Dyno Dynamics rolling road
- process was then repeated for all the different types of fuel grades
- each testing time was chosen at comparable weather conditions
- whole process took 8 months to complete

Cars tested:
1) Toyota MR2 (factory quoted 200ps = 197bhp)
2) BMW M3 E46 CSL (factory quoted 360ps = 355bhp)

Results (all estimated flywheel figures on a Dyno Dynamics rolling road):
1) Toyota MR2
- Tesco 99 = 185.1bhp
- Shell Optimax (now replaced by Shell V-Power) = 182.5bhp (-2.6bhp / 1.4% loss vs Tesco 99)
- BP Ultimate = 180bhp (-5.1bhp / 2.8% loss vs Tesco 99)
- regular 95 RON = 177bhp (-8.1bhp / 4.4% loss vs Tesco 99)

2) BMW M3 E46 CSL
- Tesco 99 = 379.7bhp
- Shell Optimax (now replaced by Shell V-Power) = 369bhp (-10.7bhp / 2.8% loss vs Tesco 99)
- BP Ultimate = 369bhp (-10.7bhp / 2.8% loss vs Tesco 99)
- regular 95 RON = 337bhp (-42.7bhp / 11.2% loss vs Tesco 99)

Thats a pretty big advantage over 95.Fellas with M3's etc are losing on some serious performance.

SouperComputer

E5 is a good way to get the octane rating up, at the expense of sacrificing power over the same octane rating using petrol. Ethanol is typicall less energy dense than petrol, so E5 is a compromise when compared to petrol of the same RON. If the ECU is set to take advantage of the higher octane and can also allow for the (teeny bit) extra flow required then its a good way to go. YMMV however. Not too fond of that article, I started loosing interest when they equated octane rating with "quality"

L1011

Maxol's E5 is 99.2. They have a list of stations guaranteed to have it:

Limerick
Banogue Cross, Croom, Co. Limerick
Garryowen, Dublin Road, Limerick Co. Limerick
Dooradoyle, Limerick Co. Limerick
Newtown, Bruff, Co. Limerick.
Singland Dublin Road, Limerick Co. Limerick
Daly's Cross, Castleconnell, Co. Limerick
Dromkeen Co. Limerick

is the Limerick listing.

Esel

Isn't everything E5 these days?

stealthyspeeder

I noticed that the station near Clontarf no longer has the promotional signs up saying that the petrol is E5 99 octane. I asked the guy behind the counter and he said it wasnt E5, but to be fair, I dont think he either knew what it was, what I was asking or what the chemical properties of the fuel he was selling on behalf of Maxol were!

So are only some stations still selling it? Where did you get that list MYOB, I didnt see that on the maxol website? or could you post the same for Dublin?

Tefral

Esel wrote: »

Isn't everything E5 these days?

Not all but most. If you look at the pumps in Topaz the "Petrol" pumps says contents: Petrolium, Ethanol.

Maxol to the best of my knowledge are the ONLY provider that supply 99RON fuel. Topaz etc cant guarantee you 99 so they dont sell it as such only "Clean" fuel.

I do notice a difference when I use E5 in my Integra, however the stuff dosent last as long on average over say Topaz fuel. It maybe due to the fact that the Ethanol when burned doesnt produce as much energy.

Matt Simis

I remember posting that!

Yeah, being "E5" doesnt actually mean anything in the Octane sense, but in Maxol's case they are cutting 95octane RUG with 110-Octane (cant recall the exact figure) Ethanol the end result is a 99octane blend.

In the US most fuel is E10 but is a lower octane than our standard 95Octane RUG (even accounting for RON vs MON differences).

Squall19

Thanks for all the info lads.

I will fill her up at weekend and see how it goes:D

coylemj

Maxol E5 is rated at 99 octane. The octane boost is an unintended consequence of adding ethanol to 95 RON Unleaded because Ethanol has an octane rating higher than unleaded. However Ethanol has a lower energy rating (joules/litre) than Unleaded so what you gain on the swings you lose on the roundabout, the octane is boosted but the overall energy rating (joules/litre) is reduced, in the case of Maxol E5 it's 30.5 megajoules/litre vs. 31 MJ/litre for ordinary unleaded.

I believe that at this stage all unleaded sold in Maxol stations is E5, that's probably why the guy in Maxol Clontarf mentioned by stealthyspeeder didn't know anything about it.

See the details here.....

http://www.maxol.ie/general-content/e5-questions-answers.html