Fuel FBHVC advice

[Forumadmin]

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[k. rogers]

I thought they said E5 was going to continue to be available!

[Forumadmin]

I drove to Pembroke last week and could not get E10 anywhere! They had 'run out'. Amazing when you think it used to be the biggest refinery in the UK!

[k. rogers]

I got the impression from the interview with the FHVC some time ago was that the current E5 fuel was going to continue from limited fuel stations and that E10 was the new higher ethanol content fuel for moderns.

[k. rogers]

I gather from someone I met today that the only E 5 available will be superunleaded . This would be totally unsuitable for our lower compression cars which originally ran on 2 star fuel! This is serious stuff and we need to know the situation before it comes into force totally.

[k. rogers]

Further to my last post, I have read on the FBHVC site that they feel that the higher octane fuel is not detrimental to low compression engines as originally thought(!!). Also it is felt that the old idea of introducing a low percentage of kerosene to the fuel to 'dilute' the potency can be detrimental as the kerosene may not combust fully and end up in the sump, so diluting the oil. Any comments would be welcome.

[Forumadmin]

There will be no detrimental effect of putting a high octane fuel into a low compression engine. The octane rating is simply the fuel's ability to not spontaneously combust under compression. (that is pre-detonate, pink or knock) https://en.wikipedia.org/wiki/Octane_rating
Each manufacture will decide on the composition of the fuels it will sell but in theory they need to formulate to British Standards. Whether they will post the standard on the pump, like they used to do, is unlikely.
The change to unleaded was far more significant for high mileage vehicles and required the fitting of hardened valve seats to combat wear (recession).
The main detrimental effect of ethanol is on old (pre-1990 approx) plastic components which in a Jowett are restricted to perhaps part of the fuel line and the pump diaphragm. These are easily replaceable with components that are designed for ethanol. https://www.sae.org/publications/techni ... 1-01-1200/
You may find that some adjustment of fuel to air mixture might benefit performance by changing the (main) jets. Then you would have to chose to stay on E10. It is unikely you will notice the difference.
https://www.researchgate.net/publicatio ... l_gasoline

From the beginning of 2018, E5-biogasoline was officially bought in the nationwide market to replace the fossil gasoline RON92 and RON95, and E10-biogasoline will be also used by 2019. In this study, the empirical research results on engine performance, and emission characteristics when using E10-biogasoline, E5-biogasoline and fossil gasoline-RON95 for the most popular in-Vietnam motorcycle based on the Chassisdyno 20" dynamometer and ECE R40 test-cycle, being Honda Wave RSX110, were carried out. As-presented results, there were about 2.3%–7.1% of increase in engine power, 1.6%–2.2% and 3%–6.7% of increase in NOx and CO 2 emissions, respectively. In addition, a reduction around 2%–4% of fuel consumption, 1.6%–5.2% of CO emissions, and 5.4%–13.7% of HC emissions of test motorcycle fueled with E10-biogasoline in comparison with fossil gasoline-RON95 and E5-biogasoline were also reported in this study. These study results were the proof of confirmation about the benefits of biogasoline, diversification of fuel sources and reduction of environmental pollution.

[Forumadmin]

The latest advice from FBHVC
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