Super unleaded petrol

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Allan mcl
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Super unleaded petrol

Post by Allan mcl » Sat Jul 18, 2020 10:26 am

If I start using super unleaded fuel will I still need to use fuel aditve or will the valves be okay.
Thanks

Paul G
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Re: Super unleaded petrol

Post by Paul G » Sat Jul 18, 2020 12:16 pm

No you will need an additive unless you have hardened exhaust valve seats in your engine.

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Jasonmarie
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Re: Super unleaded petrol

Post by Jasonmarie » Sat Jul 18, 2020 5:02 pm

Yes agree with paul , I do have a unleaded head but still use millers fuel additive as it give the right octane . Also helps with the E5 in the petrol . When I lay her up for winter I use millers tank safe on a full tank :cool:
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Allan mcl
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Re: Super unleaded petrol

Post by Allan mcl » Sat Jul 18, 2020 8:24 pm

So is there any advantage in using super unleaded or am I just waisting money.

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Re: Super unleaded petrol

Post by Jasonmarie » Sat Jul 18, 2020 9:09 pm

There’s a few of us that do notice the difference, I filled up with just unleaded on the way back from the CCI meet a few years ago and thought afterwards the car was not picking up as quick .
My thoughts when I drove my old Capri in the late 80s was 4* star was 97Ron and ford said use super unleaded as that is also 97 Ron where unleaded is 95 Ron

Talking Ron is he still on here :lol: .


Ps that’s from my head ref the Ron numbers :lol:
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Allan mcl
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Re: Super unleaded petrol

Post by Allan mcl » Sat Jul 18, 2020 10:10 pm

So using super unleaded will increase performance slightly.i have a 1600 with a weber do I just leave the settings at plugs 25, points 20 and timing 8btdc.
Thanks

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Andrew 2.8i
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Re: Super unleaded petrol

Post by Andrew 2.8i » Sun Jul 19, 2020 6:14 am

Allan mcl wrote:
Sat Jul 18, 2020 8:24 pm
So is there any advantage in using super unleaded or am I just waisting money.
Personally, I'm happy to use regular unleaded with Miller's VSPE+ additive.

Andrew.
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80s-new-man
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Re: Super unleaded petrol

Post by 80s-new-man » Mon Jul 20, 2020 5:27 pm

Actually I remember 4star was 99 RON, super was 5star, which was 101 or even 105 RON.

3star was 95 RON, and was often called “blend” because it was a halfway house between “economy” or “regular” which was 2 star, rated at 91 RON and 4 star ..

So today’s “new” “unleaded” is actually 3 star - not a good substitute for the old 4 star. - using a booster additive is a good way to keep your engine in good condition or easier, like I do, always use the “super “ brands, some are 97 but I think some are 99 RON.

Even though she’s had a new 24v BOB cossie heart, which is configured for unleaded, I always use super.

I’m really concerned about the introduction of E10 though, and the fact that super will not be around in 5 years. The persistent quest to destroy our freedom and enjoyment!
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Mk3 Mags
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Re: Super unleaded petrol

Post by Mk3 Mags » Mon Jul 20, 2020 7:32 pm

I also read somewhere that branded Super contains a better package of additives such as detergents and lubricants to keep the engine clean.

But, as you say, I'm seriously worried about the introduction of E10.

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